APA (7th ed.) Citation

Sackett, D. L., Haynes, R. B., & Tugwell, P. (1985). Clinical epidemiology: A basic science for clinical medicine. Little, Brown.

Chicago Style (17th ed.) Citation

Sackett, David L., R. Brian Haynes, and Peter Tugwell. Clinical Epidemiology: A Basic Science for Clinical Medicine. Boston: Little, Brown, 1985.

MLA (9th ed.) Citation

Sackett, David L., et al. Clinical Epidemiology: A Basic Science for Clinical Medicine. Little, Brown, 1985.