Gaya APA
Jekel, J, F. et al
(2007).
Epidemiology, biostatistics and prefentive medicine ed.3
(
Ed. 3)
.
Philadelphia:
.
Gaya MLA
Jekel, James, F.. et al.
"Epidemiology, biostatistics and prefentive medicine ed.3".
Ed. 3
Philadelphia:
,
2007.
Textbook.