Tohutoro APA (7th ed.)
Boyer, D. E., & Webb, R. H. (2007). Damming Grand Canyon: The 1923 USGS Colorado River expedition. Utah State University Press.
Tohutoru Kātū Chicago (17th ed.)
Boyer, Diane E., me Robert H. Webb. Damming Grand Canyon: The 1923 USGS Colorado River Expedition. Logan, Utah: Utah State University Press, 2007.
Tohutoro MLA (9th ed.)
Boyer, Diane E., me Robert H. Webb. Damming Grand Canyon: The 1923 USGS Colorado River Expedition. Utah State University Press, 2007.
Kia tūpato: Kāore pea ēnei kupu hautoa i te ōrite pū 100%.