Cite

Heinrich, A. P. [Anthony Philip]: untitled song

MLA

Audubon, John James, 1785-1851. Heinrich, A. P. [Anthony Philip]: untitled song. Box 13, folder 657. 1820. https://collections.library.yale.edu/catalog/16445245.

APA, 6th edition

Audubon, John James, 1785-1851. (["Box 13, folder 657"])(1820)[Heinrich, A. P. [Anthony Philip]: untitled song]. https://collections.library.yale.edu/catalog/16445245.