APA (7th ed.) Citation

Ross, J. F. (2019). The promise of the Grand Canyon: John Wesley Powell's perilous journey and his vision for the American West. Penguin.

Chicago Style (17th ed.) Citation

Ross, John F. The Promise of the Grand Canyon: John Wesley Powell's Perilous Journey and His Vision for the American West. New York, NY: Penguin, 2019.

MLA (9th ed.) Citation

Ross, John F. The Promise of the Grand Canyon: John Wesley Powell's Perilous Journey and His Vision for the American West. Penguin, 2019.