Cita APA (7a ed.)

Robbins, W. G., & Barber, K. (2011). Nature's Northwest: The North Pacific Slope in the Twentieth Century. Univ. of Arizona Press.

Cita Chicago Style (17a ed.)

Robbins, William G., y Katrine Barber. Nature's Northwest: The North Pacific Slope in the Twentieth Century. Tucson: Univ. of Arizona Press, 2011.

Cita MLA (8a ed.)

Robbins, William G., y Katrine Barber. Nature's Northwest: The North Pacific Slope in the Twentieth Century. Univ. of Arizona Press, 2011.