Cita APA (7a ed.)

Sackett, D. L., Haynes, R. B., Guyatt, G. H., & Tugwell, P. (1991). Clinical epidemiology: A basic science for clinical medicine (2nd ed.). Little, Brown and company.

Cita Chicago Style (17a ed.)

Sackett, David L., R. Brian Haynes, Gordon H. Guyatt, y Peter Tugwell. Clinical Epidemiology: A Basic Science for Clinical Medicine. 2nd ed. Boston ; Toronto; London: Little, Brown and company, 1991.

Cita MLA (9a ed.)

Sackett, David L., et al. Clinical Epidemiology: A Basic Science for Clinical Medicine. 2nd ed. Little, Brown and company, 1991.