MLA

Sharp, Jacob, and University of Pennsylvania D.D.S. Ex Libris, Jacob Sharp, D.D.S. 0AD. https://collections.library.yale.edu/catalog/16788946.

APA, 6th edition

Sharp, J., & D.D.S., U. of P. (0 C.E.). Ex Libris, Jacob Sharp, D.D.S. [Bookplates]. https://collections.library.yale.edu/catalog/16788946.