MLA

Stanley, D. M. Letters to Monsieur Chabert. 1934. https://collections.library.yale.edu/catalog/2111646.

APA, 6th edition

Stanley, D. M. (1934). Letters to Monsieur Chabert [Autographs, Correspondence, Envelopes, Letterheads]. https://collections.library.yale.edu/catalog/2111646.