Canto VI
MLA
Bird, William, 1888-1963. Canto VI. Box 2, folder 74. n.d.. https://collections.library.yale.edu/catalog/16164964.
APA, 6th edition
Bird, William, 1888-1963. (["Box 2, folder 74"])(n.d.)[Canto VI]. https://collections.library.yale.edu/catalog/16164964.