MLA

Underhill, Frank Pell, 1877-1932, Yale University, School of Medciine. Department of Pharmacology. Ex Libris, School of Medicine, Yale University, Dept. of Pharmacology. https://collections.library.yale.edu/catalog/16788759.

APA, 6th edition

Underhill, Frank Pell, 1877-1932, & Yale University, School of Medciine. Department of Pharmacology. [Ex Libris, School of Medicine, Yale University, Dept. of Pharmacology]. https://collections.library.yale.edu/catalog/16788759.