APA

Truelove S., Goodman M., . (1975). Topics in gastroenterology. Londres: Blackwwell Scientific Publications.

Chicago

Truelove S.C, Goodman M.J, . 1975. Topics in gastroenterology. Londres: Blackwwell Scientific Publications.

Harvard

Truelove S., Goodman M., . (1975). Topics in gastroenterology. Londres: Blackwwell Scientific Publications.

MLA

Truelove S.C, Goodman M.J, . Topics in gastroenterology. Londres: Blackwwell Scientific Publications. 1975.