Grundy County, Iowa (583-732)
MLA
Plowden, David. Grundy County, Iowa (583-732). 1983. https://collections.library.yale.edu/catalog/2040813.
APA, 6th edition
Plowden, D. (1983). Grundy County, Iowa (583-732). https://collections.library.yale.edu/catalog/2040813.