MLA

Bonawit, G. Owen (George Owen), 1891-1971. Section of a rose window Carmelite Monastery New York City. Box 2. Undated. https://collections.library.yale.edu/catalog/11705448.

APA, 6th edition

Bonawit, G. Owen (George Owen), 1891-1971. (["Box 2"])(Undated)[Section of a rose window Carmelite Monastery New York City]. https://collections.library.yale.edu/catalog/11705448.