Cite

Geldzahler with Ellsworth Kelly installing his room at NYPS exhibit

MLA

Geldzahler, Henry, 1935-1994. Geldzahler with Ellsworth Kelly installing his room at NYPS exhibit. Box 26, folder 21. 1970 October. https://collections.library.yale.edu/catalog/2012807.

APA, 6th edition

Geldzahler, Henry, 1935-1994. (["Box 26, folder 21"])(1970 October)[Geldzahler with Ellsworth Kelly installing his room at NYPS exhibit]. https://collections.library.yale.edu/catalog/2012807.