The style is either built in or you can download a CSL file that is supported by most references management programs.
BibTeX syles are usually part of a LaTeX template. Check the instructions to authors if the publisher offers a LaTeX template for this journal.
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
1. Danzon PM. At what price? Nature. 2007;449:176–9.
A journal article with 2 authors
1. Bhattacharya K, James RD. Applied physics. The material is the machine. Science. 2005;307:53–4.
A journal article with 3 authors
1. Schmidt AR, Dörfelt H, Perrichot V. Carnivorous fungi from Cretaceous amber. Science. 2007;318:1743.
A journal article with 7 or more authors
1. Chin XY, Yin J, Wang Z, Caironi M, Soci C. Mapping polarons in polymer FETs by charge modulation microscopy in the mid-infrared. Sci Rep. 2014;4:3626.
Books and book chapters
Here are examples of references for authored and edited books as well as book chapters.
An authored book
1. Pan GW. Wavelets in Electromagnetics and Device Modeling. Hoboken, NJ: John Wiley & Sons, Inc.; 2003.
An edited book
1. Chamoin L, Díez P, editors. Verifying Calculations - Forty Years On: An Overview of Classical Verification Techniques for FEM Simulations. 1st ed. 2016. Cham: Springer International Publishing; 2016.
A chapter in an edited book
1. Horspool RN, Tillmann N. The Web. In: Tillmann N, editor. TouchDevelop: Programming on the Go. Berkeley, CA: Apress; 2013. p. 53–69.
Sometimes references to web sites should appear directly in the text rather than in the bibliography. Refer to the Instructions to authors for Health Economics Review.
1. Hamilton K. The Eta Aquarid Meteor Shower Peaks TONIGHT. IFLScience. IFLScience; 2015.
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".
1. Government Accountability Office. National Airspace System: Regional Airport Planning Could Help Address Congestion If Plans Were Integrated with FAA and Airport Decision Making. Washington, DC: U.S. Government Printing Office; 2009 Dec. Report No.: GAO-10-120.
Theses and dissertations
Theses including Ph.D. dissertations, Master's theses or Bachelor theses follow the basic format outlined below.
1. Araki PR. Golden Years Home Residential Care Facility for the Elderly [Doctoral dissertation]. [Long Beach, CA]: California State University, Long Beach; 2017.
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
1. Johnson G. Gamblers, Scientists and the Hot Hand. New York Times. 2015 Oct 17;SR4.
References should be cited in the text by sequential numbers in square brackets:
This sentence cites one reference . This sentence cites two references [1,2]. This sentence cites four references [1–4].