Gaya APA

Friedman, G, D. (1993). Prinsip-Prinsip Epidemiologi (First). Yogyakarta: Yayasan Essentia Medica.

Gaya MLA

Friedman, Gary, D.. "Prinsip-Prinsip Epidemiologi". First Yogyakarta: Yayasan Essentia Medica, 1993. Text.