MLA

Warren, Robert Penn, 1905-1989. "Alternative Land Reform Proposals in the 1930's: The Nashville Agrarians and the Southern Tenant Farmers' Union" (offprint). Box 265, folder 4917. 1981. https://collections.library.yale.edu/catalog/33533317.

APA, 6th edition

Warren, Robert Penn, 1905-1989. (["Box 265, folder 4917"])(1981)["Alternative Land Reform Proposals in the 1930's: The Nashville Agrarians and the Southern Tenant Farmers' Union" (offprint)]. https://collections.library.yale.edu/catalog/33533317.