MLA

Howe, Susan, 1937-. Whimbrel. 94 (Broadside). Undated. https://collections.library.yale.edu/catalog/16852915.

APA, 6th edition

Howe, Susan, 1937-. (["94 (Broadside)"])(Undated)[Whimbrel]. https://collections.library.yale.edu/catalog/16852915.