APA (7th ed.) Citation

Sutton, A., & Sutton, M. (1971). The wilderness world of the Grand Canyon: "leave it as it is". Lippincott.

Chicago Style (17th ed.) Citation

Sutton, Ann, and Myron Sutton. The Wilderness World of the Grand Canyon: "Leave It as It Is". Philadelphia: Lippincott, 1971.

MLA (9th ed.) Citation

Sutton, Ann, and Myron Sutton. The Wilderness World of the Grand Canyon: "Leave It as It Is". Lippincott, 1971.