Cita APA (7th ed.)

Boyer, D. E., & Webb, R. H. (2007). Damming Grand Canyon: The 1923 USGS Colorado River expedition. Utah State University Press.

Cita Chicago (17th ed.)

Boyer, Diane E., i Robert H. Webb. Damming Grand Canyon: The 1923 USGS Colorado River Expedition. Logan, Utah: Utah State University Press, 2007.

Cita MLA (9th ed.)

Boyer, Diane E., i Robert H. Webb. Damming Grand Canyon: The 1923 USGS Colorado River Expedition. Utah State University Press, 2007.