Cita APA (7a ed.)

Keyes, M., & Donnelly, T. (2006). Anybody out there? Harper Audio.

Cita Chicago Style (17a ed.)

Keyes, Marian, y Terry Donnelly. Anybody Out There? New York: Harper Audio, 2006.

Cita MLA (8a ed.)

Keyes, Marian, y Terry Donnelly. Anybody Out There? Harper Audio, 2006.

Precaución: Estas citas no son 100% exactas.