MLA

Steinberg, Saul, 1914-1999. Photographs of "Children's Labyrinth" at 10th Milan Triennial. Box 94, folder 2030-2031 | Box 95, folder 2032. 1954 August. https://collections.library.yale.edu/catalog/32465493.

APA, 6th edition

Steinberg, Saul, 1914-1999. (["Box 94, folder 2030-2031 | Box 95, folder 2032"])(1954 August)[Photographs of "Children's Labyrinth" at 10th Milan Triennial]. https://collections.library.yale.edu/catalog/32465493.