These rules apply to scholarly articles, articles in trade publications and magazine articles. Use this format even if you find the journal online.
Author(s). Article title. Journal title abbreviated. Date of publication; volume number(issue number): page numbers.
Article with up to three authors:
Lee H, Zhang Y. BSP-SLIM: a blind low-resolution ligand-protein docking approach using predicted protein structures. Proteins. 2012 Jan 15;80(1):93-110.
Article with more than three authors:
Fujimori T, Iwasaki M, Nagamoto Y, et al. Three-dimensional measurement of growth of ossification of the posterior longitudinal ligament. J Neurosurg Spine. 2012 Mar;16(3):289-95.
No author:
Salmonella in backyard poultry. JAMA. 2016 Sep 13;316(10):1036.
Published abstract (usually a summary of a presentation at a meeting):
Want LL, Ratner RE, Uwaifo GI. Safety and tolerability of long-term pramlintide therapy [abstract]. Diabetes. 2004 Jun;53 Suppl 2:A150.
Journal articles without volume, issue, page numbers, odd page numbers, etc.:
In case you encounter these odd situations, cite the article as best you can given the information available.
For example, no volume or issue:
Schwartz-Cassell T. Feeding assistants: based on logic or way off base? Contemp Longterm Care. 2005 Jan;26-8.
Or no page numbers (in this case, a guess as to the page):
Jerger J. Broadening our horizons. J Am Acad Audiol. 1998 Feb;9(1):[preceding p.1].
Figures, tables and images in journal articles are cited as "parts" of a journal. Begin by citing the journal article as normal, then append information pointing to the figure or table (in red):
Mitchell GF, Pfeffer MA. Evaluation and management of patients with uncontrolled systolic hypertension: is another new paradigm really needed? Am Heart J. 2005 May;149(5):776-84. Figure 3, Regional pressure wave forms in the normal arterial system; p. 780.