Cita APA (7a ed.)

Kolbert, E., & Twomey, A. (2014). The sixth extinction: An unnatural history. Audioworks.

Cita Chicago Style (17a ed.)

Kolbert, Elizabeth, y Anne Twomey. The Sixth Extinction: An Unnatural History. New York, NY: Audioworks, 2014.

Cita MLA (8a ed.)

Kolbert, Elizabeth, y Anne Twomey. The Sixth Extinction: An Unnatural History. Audioworks, 2014.

Precaución: Estas citas no son 100% exactas.