MLA

Natalini, Adolfo, 1941-. Transparency of "Global Tools - 12 gennaio 1973" group portrait. Box 2, folder 50. 1973. https://collections.library.yale.edu/catalog/16169164.

APA, 6th edition

Natalini, Adolfo, 1941-. (["Box 2, folder 50"])(1973)[Transparency of "Global Tools - 12 gennaio 1973" group portrait]. https://collections.library.yale.edu/catalog/16169164.