MLA

Simpson, Randolph Linsly, 1927-1992. E.O. Sprague, Cleveland, OH Three quarter length portrait, young man with moustache in frock coat, before elaborate carved background. Cabinet photograph. Box 9, folder 180. circa 1895. https://collections.library.yale.edu/catalog/2002232.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 9, folder 180"])(circa 1895)[E.O. Sprague, Cleveland, OH Three quarter length portrait, young man with moustache in frock coat, before elaborate carved background. Cabinet photograph]. https://collections.library.yale.edu/catalog/2002232.