Logan T. Robertson, Sheffield Scientific School class of 1938.
MLA
Logan T. Robertson, Sheffield Scientific School Class of 1938. 1936. https://collections.library.yale.edu/catalog/10019971.
APA, 6th edition
Logan T. Robertson, Sheffield Scientific School class of 1938. (1936). [Photographic prints]. https://collections.library.yale.edu/catalog/10019971.