MLA

Clésinger-Sand, Solange, 1828-1899. "Arlequin muet par crainte: comedie Italienne en 3 actes...", holograph (copy), corrected. Box 3, folder 88. undated. https://collections.library.yale.edu/catalog/17444500.

APA, 6th edition

Clésinger-Sand, Solange, 1828-1899. (["Box 3, folder 88"])(undated)["Arlequin muet par crainte: comedie Italienne en 3 actes...", holograph (copy), corrected]. https://collections.library.yale.edu/catalog/17444500.