Gaya APA

Khotibul, U., Utomo, S., B. (2015). Nelson Essentials of Pediatrics (7th ed.). Philadelphia: Elsevier Saunders.

Gaya MLA

Khotibul, U., Utomo, S., B.. Nelson Essentials of Pediatrics. 7th ed. Philadelphia: Elsevier Saunders, 2015. CD.