Cite

U.S.P.R.R. Exp. & Surveys. 41st parallel. Expl. by Lieut. Beckwith. Vol. II. Round Prairie from head of the same

MLA

from F. W. Egloffstein, C. Schumman. U.S.P.R.R. Exp. & Surveys. 41st Parallel. Expl. by Lieut. Beckwith. Vol. II. Round Prairie from Head of the Same. 0AD. https://collections.library.yale.edu/catalog/2015816.

APA, 6th edition

from F. W. Egloffstein, C. S. (0 C.E.). U.S.P.R.R. Exp. & Surveys. 41st parallel. Expl. by Lieut. Beckwith. Vol. II. Round Prairie from head of the same [Intaglio prints]. https://collections.library.yale.edu/catalog/2015816.