Cita APA (7a ed.)

Powell, J. W., & DeBuys, W. E. (2001). Seeing things whole: The essential John Wesley Powell. Island Press/Shearwater Books.

Cita Chicago Style (17a ed.)

Powell, John Wesley, y William Eno DeBuys. Seeing Things Whole: The Essential John Wesley Powell. Washington, DC: Island Press/Shearwater Books, 2001.

Cita MLA (8a ed.)

Powell, John Wesley, y William Eno DeBuys. Seeing Things Whole: The Essential John Wesley Powell. Island Press/Shearwater Books, 2001.