Cita APA

Hulley, S. B., Cummings, S. R. 1., Browner, W. S., Grady, D. G., & Hearst, N. (2001). Designing clinical research: An epidemiologic approach (2. edition.). Philadelphia: Lippincott Williams & Wilkins.

Citación estilo Chicago

Hulley, Stephen B., Steven R. 1947- Cummings, Warren S. Browner, Deborah G. Grady, y Norman Hearst. Designing Clinical Research: An Epidemiologic Approach. 2. edition. Philadelphia: Lippincott Williams & Wilkins, 2001.

Cita MLA

Hulley, Stephen B., et al. Designing Clinical Research: An Epidemiologic Approach. 2. edition. Philadelphia: Lippincott Williams & Wilkins, 2001.