How to format your references using the Circulation citation style

This is a short guide how to format citations and the bibliography in a manuscript for Circulation. For a complete guide how to prepare your manuscript refer to the journal's instructions to authors.

Using reference management software

Typically you don't format your citations and bibliography by hand. The easiest way is to use a reference manager:

PaperpileThe citation style is built in and you can choose it in Settings > Citation Style or Paperpile > Citation Style in Google Docs.
EndNoteDownload the output style file
Mendeley, Zotero, Papers, and othersThe style is either built in or you can download a CSL file that is supported by most references management programs.
BibTeXBibTeX syles are usually part of a LaTeX template. Check the instructions to authors if the publisher offers a LaTeX template for this journal.

Journal articles

Those examples are references to articles in scholarly journals and how they are supposed to appear in your bibliography.

Not all journals organize their published articles in volumes and issues, so these fields are optional. Some electronic journals do not provide a page range, but instead list an article identifier. In a case like this it's safe to use the article identifier instead of the page range.

A journal article with 1 author
Macilwain C. Critics blast US missile defence system as flawed. Nature. 2000;404:799.
A journal article with 2 authors
Kuo SC, McGrath JL. Steps and fluctuations of Listeria monocytogenes during actin-based motility. Nature. 2000;407:1026–1029.
A journal article with 3 authors
Pfleiderer C, Julian SR, Lonzarich GG. Non-Fermi-liquid nature of the normal state of itinerant-electron ferromagnets. Nature. 2001;414:427–430.
A journal article with 99 or more authors
Valla T, Fedorov AV, Lee J, Davis JC, Gu GD. The ground state of the pseudogap in cuprate superconductors. Science. 2006;314:1914–1916.

Books and book chapters

Here are examples of references for authored and edited books as well as book chapters.

An authored book
Utas G. Robust Communications Software. Chichester, UK: John Wiley & Sons, Ltd; 2006.
An edited book
Yli-Jyrä A, Kornai A, Sakarovitch J, Watson B, editors. Finite-State Methods and Natural Language Processing: 8th International Workshop, FSMNLP 2009, Pretoria, South Africa, July 21-24, 2009, Revised Selected Papers. Berlin, Heidelberg: Springer; 2010.
A chapter in an edited book
Sitarz A. Conformally Rescaled Noncommutative Geometries. In: Kielanowski P, Bieliavsky P, Odzijewicz A, Schlichenmaier M, Voronov T, editors. Geometric Methods in Physics: XXXIII Workshop, Białowieża, Poland, June 29 – July 5, 2014. Cham: Springer International Publishing; 2015. p. 83–100.

Web sites

Sometimes references to web sites should appear directly in the text rather than in the bibliography. Refer to the Instructions to authors for Circulation.

Blog post
Luntz S. Radar Probes Titan’s Seas and Magic Islands [Internet]. IFLScience. 2014 [cited 2018 Oct 30];Available from:


This example shows the general structure used for government reports, technical reports, and scientific reports. If you can't locate the report number then it might be better to cite the report as a book. For reports it is usually not individual people that are credited as authors, but a governmental department or agency like "U. S. Food and Drug Administration" or "National Cancer Institute".

Government report
Government Accountability Office. Federal Aviation Administration’s Advanced Automation System Investment. Washington, DC: U.S. Government Printing Office; 1988.

Theses and dissertations

Theses including Ph.D. dissertations, Master's theses or Bachelor theses follow the basic format outlined below.

Doctoral dissertation
Voss J. Supported housing program for severely mentally ill homeless individuals: A grant proposal. 2013;

News paper articles

Unlike scholarly journals, news papers do not usually have a volume and issue number. Instead, the full date and page number is required for a correct reference.

New York Times article
Kenigsberg B. In the Shadow of Buildings and Ozu. New York Times. 2017;C6.

In-text citations

References should be cited in the text by sequential numbers in superscript:

This sentence cites one reference 1.
This sentence cites two references 1,2.
This sentence cites four references 1–4.

About the journal

Full journal titleCirculation
ISSN (print)0009-7322
ISSN (online)1524-4539
ScopeCardiology and Cardiovascular Medicine
Physiology (medical)

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