MLA

Gay, John, 1685-1732, author. Fables. MDCCXXXVIII [1738]. https://collections.library.yale.edu/catalog/33077012.

APA, 6th edition

Gay, John, 1685-1732, author. (MDCCXXXVIII [1738])[Fables]. https://collections.library.yale.edu/catalog/33077012.