Gaya APA

Katz, D, L. (2014). Jekel's Epidemiology, Biostatistic, Preventive Medicine, and Public Health . New York: Elsevier.

Gaya MLA

Katz, David, L.. "Jekel's Epidemiology, Biostatistic, Preventive Medicine, and Public Health". New York: Elsevier, 2014. Ebook.