Cita APA (7th ed.)

Webb, P., Bain, C., & Pirozzo, S. Essential epidemiology: An introduction for students and health professionals.

Cita Chicago (17th ed.)

Webb, Penny, Chris Bain, i Sandi Pirozzo. Essential Epidemiology: An Introduction for Students and Health Professionals.

Cita MLA (9th ed.)

Webb, Penny, et al. Essential Epidemiology: An Introduction for Students and Health Professionals.