Cita APA (7a ed.)

Time-Life Books & Allen, O. E. (1982). Secrets of a good digestion. Time-Life Books.

Cita Chicago Style (17a ed.)

Time-Life Books y Oliver E. Allen. Secrets of a Good Digestion. Alexandria, Va: Time-Life Books, 1982.

Cita MLA (9a ed.)

Time-Life Books y Oliver E. Allen. Secrets of a Good Digestion. Time-Life Books, 1982.