APA (7th ed.) Citation

Villiers, G. (1786). Impromptu. [publisher not identified].

Chicago Style (17th ed.) Citation

Villiers, George. Impromptu. [London?]: [publisher not identified], 1786.

MLA (9th ed.) Citation

Villiers, George. Impromptu. [publisher not identified], 1786.

Warning: These citations may not always be 100% accurate.