MLA

Buddicom, R. A. Ex Libris, R. A. Buddicom. 0AD. https://collections.library.yale.edu/catalog/16789200.

APA, 6th edition

Buddicom, R. A. (0 C.E.). Ex Libris, R. A. Buddicom [Bookplates]. https://collections.library.yale.edu/catalog/16789200.