Wheat Fields. Near Great Falls, Montana (GP-322)
MLA
Plowden, David. Wheat Fields. Near Great Falls, Montana (GP-322). 1971. https://collections.library.yale.edu/catalog/2036553.
APA, 6th edition
Plowden, D. (1971). Wheat Fields. Near Great Falls, Montana (GP-322). https://collections.library.yale.edu/catalog/2036553.