Near Marathon, Buena Vista County, Iowa (686-818)
MLA
Plowden, David (1932). Near Marathon, Buena Vista County, Iowa (686-818). Box 29. 1986 June. https://collections.library.yale.edu/catalog/2040124.
APA, 6th edition
Plowden, David (1932). (["Box 29"])(1986 June)[Near Marathon, Buena Vista County, Iowa (686-818)]. https://collections.library.yale.edu/catalog/2040124.