Gaya APA

Vergani, K, -., Gouler, E, O, -, . (2008). Walkers Pediatric Gastrointestinal Disease Vol 1& 2 . Canada: BC Dekler Inc Hamilton.

Gaya MLA

Vergani, Kleinman, -Goulet.Mieli., Gouler, E.Kleiman, Olivier, -Jean, . "Walkers Pediatric Gastrointestinal Disease Vol 1& 2". Canada: BC Dekler Inc Hamilton, 2008. Text.