References are presented in two ways:
A reference list (or bibliography) at the end of the work
In text citations
Three major systems of in-text references can be used: citation-sequence, citation-name, and name-year. This guide refers only to the citation-sequence (numeric) system of in-text referencing. In this system numbers are used in the text to refer to the reference list.
DVD, Video, TV or Radio Broadcast
This guide is based on Patrias K. Citing medicine: the NLM style guide for authors, editors, and publishers [Internet]. 2nd ed. Wendling DL, technical editor. Bethesda (MD): National Library of Medicine (US); 2007 [updated 2009 Oct 21].