Gaya APA
FRIIS, ROBERT H. (2010).
EPIDEMIOLOGY 101 .
BURLINGTON:
JONES & BARLETT LEARNING.
Gaya Chicago
FRIIS, ROBERT H.
EPIDEMIOLOGY 101.
BURLINGTON:
JONES & BARLETT LEARNING,
2010.
Text.
Gaya MLA
FRIIS, ROBERT H.
EPIDEMIOLOGY 101.
BURLINGTON:
JONES & BARLETT LEARNING,
2010.
Text.
Gaya Turabian
FRIIS, ROBERT H.
EPIDEMIOLOGY 101.
BURLINGTON:
JONES & BARLETT LEARNING,
2010.
Print.