Akers, K. (1983). A vegetarian sourcebook. Vegetarian Press.
Cita Chicago (17th ed.)Akers, Keith. A Vegetarian Sourcebook. Vegetarian Press, 1983.
Cita MLA (9th ed.)Akers, Keith. A Vegetarian Sourcebook. Vegetarian Press, 1983.
Atenció: Aquestes cites poden no estar 100% correctes.