Gaya APA

ROBERT, K, M. (2016). NELSON TEXTBOOK OF PEDIATRICS (EDISI 20 VOL. 1). Canada: Elsevier Saunders.

Gaya MLA

ROBERT, KLIEGMAN, M.. "NELSON TEXTBOOK OF PEDIATRICS". EDISI 20 VOL. 1 Canada: Elsevier Saunders, 2016. Text.