MLA

Oenslager, Donald, 1902-1975. "Gordon Craig and Gertrude Robins at Arena Goldoni [Florence]," photograph by Charles E. Dawson. Box 5, folder 167. n.d.. https://collections.library.yale.edu/catalog/2032246.

APA, 6th edition

Oenslager, Donald, 1902-1975. (["Box 5, folder 167"])(n.d.)["Gordon Craig and Gertrude Robins at Arena Goldoni [Florence]," photograph by Charles E. Dawson]. https://collections.library.yale.edu/catalog/2032246.