Gaya APA

S., L., M., G. (2015). Textbook of gastrointestinal radiology / 4th edition volume 2 (4th). Canada: Elsevier Saunders.

Gaya MLA

S., Levine,Marc., M., Gore,Richard. "Textbook of gastrointestinal radiology / 4th edition volume 2". 4th Canada: Elsevier Saunders, 2015. Text.