MLA

photography board, Yale Banner Publications. James Nowak, Henry Obermanns, Donald Ogilvie, Edward O'Hare, Kevin O'Keefe and Stephen Orthwein, from the 1968 Yale Class Book. 1968. https://collections.library.yale.edu/catalog/10021935.

APA, 6th edition

photography board, Y. B. P. (1968). James Nowak, Henry Obermanns, Donald Ogilvie, Edward O'Hare, Kevin O'Keefe and Stephen Orthwein, from the 1968 Yale class book. [Books (part of)]. https://collections.library.yale.edu/catalog/10021935.