Cite

Gibbs, Robert W. to JJA

MLA

Audubon, John James, 1785-1851. Gibbs, Robert W. to JJA. Box 4, folder 162. 1836 Dec 27. https://collections.library.yale.edu/catalog/16445214.

APA, 6th edition

Audubon, John James, 1785-1851. (["Box 4, folder 162"])(1836 Dec 27)[Gibbs, Robert W. to JJA]. https://collections.library.yale.edu/catalog/16445214.