MLA

Fountain, John, fl. 1661. Rewards of vertue. Adaptations, parodies, etc, Shadwell, Thomas, 1642?-1692. The royal shepherdess. A tragi-comedy, as it is acted by Their Maiesties servants. Written by Thomas Shadwell .... 1691. https://collections.library.yale.edu/catalog/2066181.

APA, 6th edition

Fountain, John, fl. 1661. Rewards of vertue. Adaptations, parodies, etc, & Shadwell, Thomas, 1642?-1692. (1691)[The royal shepherdess. A tragi-comedy, as it is acted by Their Maiesties servants. Written by Thomas Shadwell ...]. https://collections.library.yale.edu/catalog/2066181.