High School Gymnasium. Parnell, Iowa (687-531)
MLA
Plowden, David (1932). High School Gymnasium. Parnell, Iowa (687-531). Box 34. 1987 June. https://collections.library.yale.edu/catalog/2040717.
APA, 6th edition
Plowden, David (1932). (["Box 34"])(1987 June)[High School Gymnasium. Parnell, Iowa (687-531)]. https://collections.library.yale.edu/catalog/2040717.