MLA

Marinetti, F. T., 1876-1944. Pages from a catalog. With three photos by Piet Mondrian: “Décors pour 'l'éphémère est éternel' de Seuphor.” No source. [04849-1]. box 61, slide 69. no date. https://collections.library.yale.edu/catalog/10656380.

APA, 6th edition

Marinetti, F. T., 1876-1944. (["box 61, slide 69"])(no date)[Pages from a catalog. With three photos by Piet Mondrian: “Décors pour 'l'éphémère est éternel' de Seuphor.” No source. [04849-1]]. https://collections.library.yale.edu/catalog/10656380.