APA Style

BOUCHIER, I, , A, D. (1993). GASTROENTEROLOGY CLINICAL SCIENCE AND PRACTICE (Second). England: W. B. SAUNDERS COMPANY.

MLA Style

BOUCHIER, IAN, , A., D.. "GASTROENTEROLOGY CLINICAL SCIENCE AND PRACTICE". Second England: W. B. SAUNDERS COMPANY, 1993. Text.