Gaya APA
Gerstman, B, B. (2003).
Epidemiology Kept Simple: an Introduction to traditional and modern epidemiology (2).
America:
Wiley-Liss.
Gaya MLA
Gerstman, B., Burt.
"Epidemiology Kept Simple: an Introduction to traditional and modern epidemiology".
2
America:
Wiley-Liss,
2003.
Text.