APA-referens (7:e uppl.)

Allen, O. E. (1982). Secrets of a good digestion. Library of Health.

Chicago-referens (17:e uppl.)

Allen, Oliver E. Secrets of a Good Digestion. Alexandria, Va: Library of Health, 1982.

MLA-referens (9:e uppl.)

Allen, Oliver E. Secrets of a Good Digestion. Library of Health, 1982.