Gaya APA
Webb, C, B, &, P. (2020).
Essential Epidemiology An Introduction for Students and Health Professionals .
Jakarta:
Elsevier.
Gaya MLA
Webb, Chris, Bain, &, Penelope.
"Essential Epidemiology An Introduction for Students and Health Professionals".
Jakarta:
Elsevier,
2020.
Monograf.