APA aipamena

Gordis, L. (2009). Epidemiology (4th.). Saunders Elsevier.

Chicago Style aipamena

Gordis, Leon. Epidemiology. 4th. USA: Saunders Elsevier, 2009.

MLA aipamena

Gordis, Leon. Epidemiology. 4th. Saunders Elsevier, 2009.