APA-Zitierstil (7. Ausg.)

Dolnick, E. (2002). Down the great unknown: John Wesley Powell's 1869 journey of discovery and tragedy through the Grand Canyon (1. ed.). Perennial.

Chicago-Zitierstil (17. Ausg.)

Dolnick, Edward. Down the Great Unknown: John Wesley Powell's 1869 Journey of Discovery and Tragedy Through the Grand Canyon. 1. ed. New York, NY: Perennial, 2002.

MLA-Zitierstil (9. Ausg.)

Dolnick, Edward. Down the Great Unknown: John Wesley Powell's 1869 Journey of Discovery and Tragedy Through the Grand Canyon. 1. ed. Perennial, 2002.