MLA

Walpole, Horace, 1717-1797, author. The master of Otranto being in durance and not able to receive the Fairy Blandina; 'Twas on this lofty vase's side. [between 1781 and 1797?]. https://collections.library.yale.edu/catalog/16824679.

APA, 6th edition

Walpole, Horace, 1717-1797, author. ([between 1781 and 1797?])[The master of Otranto being in durance and not able to receive the Fairy Blandina; 'Twas on this lofty vase's side]. https://collections.library.yale.edu/catalog/16824679.