MLA

A. Lüer, Gilbert, Samuel D., MD. Amputation Set. Box 028. ca. late 19th century. https://collections.library.yale.edu/catalog/17316492.

APA, 6th edition

A. Lüer, & Gilbert, Samuel D., MD. (["Box 028"])(ca. late 19th century)[Amputation Set]. https://collections.library.yale.edu/catalog/17316492.