MLA

Geldzahler, Henry, 1935-1994. Jack Whitten: Approximately 100-page file of notes, manuscript, typescript, letters plus from this contemporary black American artist. Various catalogues and press clips circa 1983. Box 1, folder 12. circa 1983. https://collections.library.yale.edu/catalog/17434965.

APA, 6th edition

Geldzahler, Henry, 1935-1994. (["Box 1, folder 12"])(circa 1983)[Jack Whitten: Approximately 100-page file of notes, manuscript, typescript, letters plus from this contemporary black American artist. Various catalogues and press clips circa 1983]. https://collections.library.yale.edu/catalog/17434965.