Gaya APA

Ludwig, G, R, , F, , S. (2008). Textbook of Pediatric Emergency Medicine (6th Edition). : Lippincott Wiliams & Wiliins.

Gaya MLA

Ludwig, Gary, R, , Fleisher, , Stephen. "Textbook of Pediatric Emergency Medicine". 6th Edition : Lippincott Wiliams & Wiliins, 2008. Text.