MLA

Simpson, Randolph Linsly, 1927-1992. Alfred S. Campbell, Elizabeth, NJ Photographer's identification stamped recto. Mounted verso, "900 A Home-Made Cycle. The cycle craze has reached even the remote country districts...." Stereograph, ivory card. Box 12, folder 580. 1896. https://collections.library.yale.edu/catalog/2057851.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 12, folder 580"])(1896)[Alfred S. Campbell, Elizabeth, NJ Photographer's identification stamped recto. Mounted verso, "900 A Home-Made Cycle. The cycle craze has reached even the remote country districts...." Stereograph, ivory card]. https://collections.library.yale.edu/catalog/2057851.