MLA

Borland, Hal, 1900-1978. "Angeline," typescript carbon. Box 7. undated. https://collections.library.yale.edu/catalog/32241685.

APA, 6th edition

Borland, Hal, 1900-1978. (["Box 7"])(undated)["Angeline," typescript carbon]. https://collections.library.yale.edu/catalog/32241685.