MLA

Riggs, Lynn, 1899-1954. "Poetry --- and Poetry in the Theatre" A radio talk over WSUI, Iowa City, typescript, corrected. Box 23, folder 379. 1932 Nov 16. https://collections.library.yale.edu/catalog/32244872.

APA, 6th edition

Riggs, Lynn, 1899-1954. (["Box 23, folder 379"])(1932 Nov 16)["Poetry --- and Poetry in the Theatre" A radio talk over WSUI, Iowa City, typescript, corrected]. https://collections.library.yale.edu/catalog/32244872.