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
Adam D. Chemistry journal reacts to dispute. Nature 2001;412(6848):669.
A journal article with 2 authors
Montagner JP., Ritsema J. Geology. Interactions between ridges and plumes. Science 2001;294(5546):1472–3.
A journal article with 3 authors
Gaudelli NM., Long DH., Townsend CA. β-Lactam formation by a non-ribosomal peptide synthetase during antibiotic biosynthesis. Nature 2015;520(7547):383–7.
A journal article with 4 or more authors
Feinberg AW., Feigel A., Shevkoplyas SS., et al. Muscular thin films for building actuators and powering devices. Science 2007;317(5843):1366–70.
Books and book chapters
Here are examples of references for authored and edited books as well as book chapters.
An authored book
Tyson H. Microsoft® Word 2010 Bible. Hoboken, NJ: John Wiley & Sons, Inc.; 2010.
An edited book
Cahalane H. Contemporary Issues in Child Welfare Practice. New York, NY: Springer; 2013.
A chapter in an edited book
Gollasch S., David M., Keast K., et al. Policy and Legal Framework and the Current Status of Ballast Water Management Requirements. In: David M, Gollasch S, editors. Global Maritime Transport and Ballast Water Management: Issues and Solutions. Dordrecht: Springer Netherlands; 2015. p. 59–88.
Sometimes references to web sites should appear directly in the text rather than in the bibliography. Refer to the Instructions to authors for Surgical Pathology Clinics.
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 Accountability Office. Measuring Performance: The Advanced Technology Program and Private-Sector Funding. Washington, DC: U.S. Government Printing Office; 1996.
Theses and dissertations
Theses including Ph.D. dissertations, Master's theses or Bachelor theses follow the basic format outlined below.
Tripamer AJ. Teacher Perceptions of Teacher Evaluations in the Fort Zumwalt School District. Doctoral dissertation, Southern Illinois University, Edwardsville, IL, 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
Billard M. Sunsets and Pink Dolphins Along the Amazon. New York Times 2014:TR12.
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.