MLA

Ex Libris, MacDowel Cosgrave, PræSidis Collegii, Medicorum Regii Hiberniæ. 1914. https://collections.library.yale.edu/catalog/16789321.

APA, 6th edition

Ex Libris, MacDowel Cosgrave, Præsidis Collegii, Medicorum Regii Hiberniæ. (1914). [Bookplates]. https://collections.library.yale.edu/catalog/16789321.