MLA

Faber du Faur, Curt von, 1890-1966. “Notizen zum Barockbuch”. Box 10, folder 55. 1936-1966. https://collections.library.yale.edu/catalog/17271156.

APA, 6th edition

Faber du Faur, Curt von, 1890-1966. (["Box 10, folder 55"])(1936-1966)[“Notizen zum Barockbuch”]. https://collections.library.yale.edu/catalog/17271156.