Index to College pamphlets.
MLA
Dexter, Franklin Bowditch, 1842-1920, Yale University. Library, author. Index to College pamphlets.. [between 1867?-1907?]. https://collections.library.yale.edu/catalog/11530124.
APA, 6th edition
Dexter, Franklin Bowditch, 1842-1920, & Yale University. Library, author. ([between 1867?-1907?])[Index to College pamphlets.]. https://collections.library.yale.edu/catalog/11530124.