APA (7th ed.) Citation

Muench, J. R., & Muench, J. (1950). Grand Canyon: A pictorial interpretation. Hastings House.

Chicago Style (17th ed.) Citation

Muench, Joyce Rockwood, and Josef Muench. Grand Canyon: A Pictorial Interpretation. New York: Hastings House, 1950.

MLA (9th ed.) Citation

Muench, Joyce Rockwood, and Josef Muench. Grand Canyon: A Pictorial Interpretation. Hastings House, 1950.