Wallace, R. 1., & Wallace, R. 1. (1972). The Grand Canyon ([1. edition].). New York, New York: The American Wilderness.
Chicago Style CitationWallace, Robert 1919-, and Robert 1919- Wallace. The Grand Canyon. [1. edition]. New York, New York: The American Wilderness, 1972.
MLA CitationWallace, Robert 1919-, and Robert 1919- Wallace. The Grand Canyon. [1. edition]. New York, New York: The American Wilderness, 1972.
Warning: These citations may not always be 100% accurate.