California Division of Mines and Geology Self-Guided Geologic Tour in Joshua Tree National Monument

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Trent, D.D., 1984, Geology of the Joshua Tree National Monument: CALIFORNIA GEOLOGY, v. 37, no. 4, p. 75-86, April.

Vasek, F.C. and Barbour, M.G., 1988, Mojave desert scrub vegetation in Barbour, M.G., and Major, J., editors, Terrestrial vegetation of California: California Native Plant Society, p. 857-858.

Wanrow, Elden K., 1975, Geology and man: an 18-mile self-guiding motor nature trail: Joshua Tree Natural History Association, 8 p.