Cita APA (7a ed.)

Adams Douglas & Carwardine, M. (1990). Last chance to see. AUWSF.

Cita Chicago Style (17a ed.)

Adams Douglas y Mark Carwardine. Last Chance to See. New York: AUWSF, 1990.

Cita MLA (9a ed.)

Adams Douglas y Mark Carwardine. Last Chance to See. AUWSF, 1990.