Webb, P., Bain, C., & Pirozzo, S. Essential epidemiology: An introduction for students and health professionals.
Chicago-viite (17. p.)Webb, Penny, Chris Bain, ja Sandi Pirozzo. Essential Epidemiology: An Introduction for Students and Health Professionals.
MLA-viite (9. p.)Webb, Penny, et al. Essential Epidemiology: An Introduction for Students and Health Professionals.
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