How to format your references using the Periodontology 2000 citation style

This is a short guide how to format citations and the bibliography in a manuscript for Periodontology 2000. 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.
EndNoteFind the style here: output styles overview
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
Martin TE. Ecology. The cost of fear. Science 2011: 334: 1353–1354.
A journal article with 2 authors
Goff SA, Klee HJ. Plant volatile compounds: sensory cues for health and nutritional value? Science 2006: 311: 815–819.
A journal article with 3 authors
Fowler JH, Johnson T, Smirnov O. Human behaviour: Egalitarian motive and altruistic punishment. Nature 2005: 433: 1 p following 32; discussion following 32.
A journal article with 100 or more authors
Vollbrecht E, Springer PS, Goh L, Buckler ES 4th, Martienssen R. Architecture of floral branch systems in maize and related grasses. Nature 2005: 436: 1119–1126.

Books and book chapters

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

An authored book
Murray B. The Possibility of Culture. Hoboken, NJ: John Wiley & Sons, Inc 2015
An edited book
Shute VJ, Becker BJ, eds. Innovative Assessment for the 21st Century: Supporting Educational Needs. Boston, MA: Springer US 2010
A chapter in an edited book
Beilina L, Andresen MPH, Krogstad HE. Adaptive Finite Element Method in Reconstruction of Dielectrics from Backscattered Data. In: Beilina L, editor. Applied Inverse Problems: Select Contributions from the First Annual Workshop on Inverse Problems. New York, NY: Springer 2013: 51–73.

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 Periodontology 2000.

Blog post
Andrews R. The Close Door Buttons On Elevators Do Absolutely Nothing At All. IFLScience. 2016. (accessed 30 Oct2018).


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. Aviation Security: TSA Has Enhanced Its Explosives Detection Requirements for Checked Baggage, but Additional Screening Actions Are Needed. Washington, DC: U.S. Government Printing Office 2011

Theses and dissertations

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

Doctoral dissertation
Greenfield Pace JA. The influence of accountability and commitment on team performance of airline flight crews. 2016.

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
Greenhouse L. Treaty Doesn’t Give Foreign Defendants Special Status in U.S. Courts, Justices Rule. New York Times. 2006: : A22.

In-text citations

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

This sentence cites one reference (2).
This sentence cites two references (3,4).
This sentence cites four references (4–6,8).

About the journal

Full journal titlePeriodontology 2000
AbbreviationPeriodontol. 2000
ISSN (print)0906-6713
ISSN (online)1600-0757

Other styles