MLA

Gardew, George Schuyler, and M. D. George Schuyler Gardew, M.D. 0AD. https://collections.library.yale.edu/catalog/16789235.

APA, 6th edition

Gardew, G. S., & M. D. (0 C.E.). George Schuyler Gardew, M.D. [Bookplates]. https://collections.library.yale.edu/catalog/16789235.