MLA

Wolff, Kurt, 1887-1963. Gauguin, Paul: Avant et Après, typescript. Box 3, folder 82. 1919. https://collections.library.yale.edu/catalog/31906678.

APA, 6th edition

Wolff, Kurt, 1887-1963. (["Box 3, folder 82"])(1919)[Gauguin, Paul: Avant et Après, typescript]. https://collections.library.yale.edu/catalog/31906678.