Ex Libris, Samuel X. Radbill, M.D.
MLA
Radbill, Samuel X., and University of Pennsylvania. Ex Libris, Samuel X. Radbill, M.D. 0AD. https://collections.library.yale.edu/catalog/16788934.
APA, 6th edition
Radbill, S. X., & of Pennsylvania, U. (0 C.E.). Ex Libris, Samuel X. Radbill, M.D. [Bookplates]. https://collections.library.yale.edu/catalog/16788934.