Memorandum of an agreement
MLA
Audubon, John Woodhouse, 1812-1862. Memorandum of an agreement. 1849 Jan 27. https://collections.library.yale.edu/catalog/17245233.
APA, 6th edition
Audubon, John Woodhouse, 1812-1862. (1849 Jan 27)[Memorandum of an agreement]. https://collections.library.yale.edu/catalog/17245233.