Cita APA (7a ed.)

Zwinger, A. H. (2015). Downcanyon: A Naturalist Explores the Colorado River through the Grand Canyon. University of Arizona Press.

Cita Chicago Style (17a ed.)

Zwinger, Ann Haymond. Downcanyon: A Naturalist Explores the Colorado River Through the Grand Canyon. University of Arizona Press, 2015.

Cita MLA (8a ed.)

Zwinger, Ann Haymond. Downcanyon: A Naturalist Explores the Colorado River Through the Grand Canyon. University of Arizona Press, 2015.