MLA

Schletter, Annie, 1858-1944. Ryan, John. 3 poems, holograph, signed, addressed to Rosetta Phillips. Box 2, folder 74. 1832. https://collections.library.yale.edu/catalog/17453749.

APA, 6th edition

Schletter, Annie, 1858-1944. (["Box 2, folder 74"])(1832)[Ryan, John. 3 poems, holograph, signed, addressed to Rosetta Phillips]. https://collections.library.yale.edu/catalog/17453749.