Gaya APA

Ludwig, G, R, F, &, S. (2000). Textbook of Pediatric Emergency Medicine (4). Philadelphia: Lippincott Williams & Wilkins.

Gaya MLA

Ludwig, Gary, R., Fleisher, &, Stephen. "Textbook of Pediatric Emergency Medicine". 4 Philadelphia: Lippincott Williams & Wilkins, 2000. Text.