Cita APA (7a ed.)

Hay, R. L. R. (1976). Geology of the Olduvai Gorge: A study of sedimentation in a semiarid basin. University of California Press.

Cita Chicago Style (17a ed.)

Hay, Richard Le Ray. Geology of the Olduvai Gorge: A Study of Sedimentation in a Semiarid Basin. Berkeley: University of California Press, 1976.

Cita MLA (9a ed.)

Hay, Richard Le Ray. Geology of the Olduvai Gorge: A Study of Sedimentation in a Semiarid Basin. University of California Press, 1976.