MLA

Hokinson, Helen E. (Helen Elna), 1893-1949. The Hokinson festival / with a memoir by James Reid Parker and an appreciation by John Mason Brown.. [1956]. https://collections.library.yale.edu/catalog/17472974.

APA, 6th edition

Hokinson, Helen E. (Helen Elna), 1893-1949. ([1956])[The Hokinson festival / with a memoir by James Reid Parker and an appreciation by John Mason Brown.]. https://collections.library.yale.edu/catalog/17472974.