Stratigraphy and history of the Toroweap Formation (Permian) between Grindstone Canyon and Sycamore Canyon, Arizona
Pfirman, R.S., 1969, Stratigraphy and history of the Toroweap Formation (Permian) between Grindstone Canyon and Sycamore Canyon, Arizona: Plateau, v. 41, no. 3, p. 141-152.