An abstract can be cited when it is the only source of information.
In-text reference citations shall be baseline in parentheses, not superscripts [e.g., (14,15), not 14,15]. Personal Internet Web sites, Master of Science theses, personal communications, or other unpublished material are not acceptable as references. All book references require page numbers. Journal abbreviations should follow the abbreviations of Index Medicus published by the Library of Congress.
Use of et al.—If fewer than seven (7) authors are listed, all should be mentioned. When seven or more authors are named, list only the first three.
Cohen J. Statistical Power Analysis for the Behavioral Sciences. 2nd ed. Hillsdale (NJ): Lawrence Erlbaum Associates; 1988. 567 p.
Paffenbarger RS, Hyde RT, Wing AL. Physical activity and physical fitness as determinants of health and longevity. In: Bouchard C, Shephard RJ, Stephens T, Sutton JR, McPherson BD, editors. Exercise, Fitness, and Health. Champaign: Human Kinetics; 1990. p. 33–48.
Blair SN, Ellsworth NM, Haskell WL, Stern MP, Farguhar JW, Wood PD. Comparison of nutrient intake in middle-aged men and women runners and controls. Med Sci Sports Exerc. 1981;13(5):310–5.
Vickers AJ. Time course of muscle soreness following different types of exercise. BMC Musculoskeletal Disorders [Internet]. 2001 [cited 2001 May 31];2(5). Available from: http://www.biomedcentral.com/1471-2474/2/5. doi:10.1186/1471-2474-2-5.
American Heart Association Web site [Internet]. Dallas (TX): American Heart Association; [cited 2006 Jan 1]. Available from: http://www.americanheart.org.
U.S. Department of Health and Human Services. Bone Health and Osteoporosis: A Report of the Surgeon General. Rockville, MD: U.S. Department of Health and Human Services, Office of the Surgeon General; 2004. 436 p. Available from: U.S. GPO, Washington.
Crandall C. Alterations in human baroreceptor reflex regulation of blood pressure following 15 days of simulated microgravity exposure [dissertation]. Fort Worth (TX): University of North Texas; 1993. 100 p.
Matthie JR, Withers PO, Van Loan MD, Mayclin PL. Development of a commercial complex bio-impedance spectroscopic (CBIS) system for determining intracellular water (ICW) and extracellular water (ECW) volumes. In: Proceedings of the 8th International Conference on Electrical Bio-impedance; 1992 Jul 28-31: Kuopio (Finland). University of Kuopio; 1992. p. 203–5.