Cite

U.S.P.R.R. Exp. & Surveys-Cal. & Oregon. Botany-Plate IV. Pinus ponderosa

MLA

U.S.P.R.R. Exp. & Surveys-Cal. & Oregon. Botany-Plate IV. Pinus Ponderosa. 0AD. https://collections.library.yale.edu/catalog/2015733.

APA, 6th edition

U.S.P.R.R. Exp. & Surveys-Cal. & Oregon. Botany-Plate IV. Pinus ponderosa. (0 C.E.). [Lithographs, Planographic prints]. https://collections.library.yale.edu/catalog/2015733.