Cyrus Spottswood Shippen, class of 1899.
MLA
Cyrus Spottswood Shippen, Class of 1899. 1899. https://collections.library.yale.edu/catalog/10016444.
APA, 6th edition
Cyrus Spottswood Shippen, class of 1899. (1899). [Books (part of)]. https://collections.library.yale.edu/catalog/10016444.