Draft B (revised poems): holograph and typescripts, corrected
MLA
Warren, Robert Penn, 1905-1989. Draft B (revised poems): holograph and typescripts, corrected. Box 118, folder 2191-92. n.d.. https://collections.library.yale.edu/catalog/2011305.
APA, 6th edition
Warren, Robert Penn, 1905-1989. (["Box 118, folder 2191-92"])(n.d.)[Draft B (revised poems): holograph and typescripts, corrected]. https://collections.library.yale.edu/catalog/2011305.