U.S.P.R.R. Exp. & Surveys-Cal. & Oregon. Geology. Plate II
MLA
U.S.P.R.R. Exp. & Surveys-Cal. & Oregon. Geology. Plate II. 0AD. https://collections.library.yale.edu/catalog/2015708.
APA, 6th edition
U.S.P.R.R. Exp. & Surveys-Cal. & Oregon. Geology. Plate II. (0 C.E.). [Lithographs, Planographic prints]. https://collections.library.yale.edu/catalog/2015708.