MLA

Thorington, J. Monroe. J. Monroe Thorington Ex Libris (1894-. 0AD. https://collections.library.yale.edu/catalog/16788977.

APA, 6th edition

Thorington, J. M. (0 C.E.). J. Monroe Thorington Ex Libris (1894- [Bookplates]. https://collections.library.yale.edu/catalog/16788977.