MLA

Coracle Press, Van Horn, and creator Erica. 1989. Coracle, 1991. https://collections.library.yale.edu/catalog/2055126.

APA, 6th edition

Coracle Press, V. H., & Erica., creator. (1991). 1989 [Artists' books]. Coracle. https://collections.library.yale.edu/catalog/2055126.