Cite

[Autograph letter 1915 September? to Isabel Lachaise]

MLA

Lachaise, Gaston, 1882-1935. [Autograph letter 1915 September? to Isabel Lachaise]. Letters to Isabel Lachaise [1915 Aug-Oct]. [1915 September?]. https://collections.library.yale.edu/catalog/2054066.

APA, 6th edition

Lachaise, Gaston, 1882-1935. (["Letters to Isabel Lachaise [1915 Aug-Oct]"])([1915 September?])[[Autograph letter 1915 September? to Isabel Lachaise]]. https://collections.library.yale.edu/catalog/2054066.