Cita APA (7a ed.)

Hughes, G. (1976). Let's keep it simple. National Ultreya Publications.

Cita Chicago Style (17a ed.)

Hughes, Gerry. Let's Keep It Simple. Dallas, TX: National Ultreya Publications, 1976.

Cita MLA (8a ed.)

Hughes, Gerry. Let's Keep It Simple. National Ultreya Publications, 1976.