Holograph manuscript, corrected and signed
MLA
Whitman, Walt, 1819-1892. Holograph manuscript, corrected and signed. Box 3, folder 149. [1888]. https://collections.library.yale.edu/catalog/2001543.
APA, 6th edition
Whitman, Walt, 1819-1892. (["Box 3, folder 149"])([1888])[Holograph manuscript, corrected and signed]. https://collections.library.yale.edu/catalog/2001543.