Cita APA (7a ed.)

Armstrong, D. M. (2008). Rocky Mountain Mammals: A Handbook of Mammals of Rocky Mountain National Park and Vicinity, Third Edition (3rd ed.). In cooperation with the Rocky Mountain Nature Association.

Cita Chicago Style (17a ed.)

Armstrong, David Michael. Rocky Mountain Mammals: A Handbook of Mammals of Rocky Mountain National Park and Vicinity, Third Edition. 3rd ed. Boulder: In cooperation with the Rocky Mountain Nature Association, 2008.

Cita MLA (8a ed.)

Armstrong, David Michael. Rocky Mountain Mammals: A Handbook of Mammals of Rocky Mountain National Park and Vicinity, Third Edition. 3rd ed. In cooperation with the Rocky Mountain Nature Association, 2008.