MLA

Shadwell, Thomas, 1642?-1692. The squire of Alsatia. A comedy, as it is acted by Their Majesty’s servants. Written by Tho. Shadwell .... 1688. https://collections.library.yale.edu/catalog/2066191.

APA, 6th edition

Shadwell, Thomas, 1642?-1692. (1688)[The squire of Alsatia. A comedy, as it is acted by Their Majesty’s servants. Written by Tho. Shadwell ...]. https://collections.library.yale.edu/catalog/2066191.