Recipe card file
MLA
O'Keeffe, Georgia, 1887-1986. Recipe card file. Box 5, folder 49. circa 1950s-1970s. https://collections.library.yale.edu/catalog/32304749.
APA, 6th edition
O'Keeffe, Georgia, 1887-1986. (["Box 5, folder 49"])(circa 1950s-1970s)[Recipe card file]. https://collections.library.yale.edu/catalog/32304749.