Gaya APA
Leon Gordis, MD, MPH, DrPH. (2014).
EPIDEMIOLOGY .
Philadelphia:
Elsevier Saunders.
Gaya Chicago
Leon Gordis, MD, MPH, DrPH.
EPIDEMIOLOGY.
Philadelphia:
Elsevier Saunders,
2014.
Electronic Resource.
Gaya MLA
Leon Gordis, MD, MPH, DrPH.
EPIDEMIOLOGY.
Philadelphia:
Elsevier Saunders,
2014.
Electronic Resource.
Gaya Turabian
Leon Gordis, MD, MPH, DrPH.
EPIDEMIOLOGY.
Philadelphia:
Elsevier Saunders,
2014.
Electronic Resource.