APA (7th ed.) Citation

Congreve, W. (1990). The double-dealer, a comedy. Project Gutenberg.

Chicago Style (17th ed.) Citation

Congreve, William. The Double-dealer, a Comedy. Champaign, Ill: Project Gutenberg, 1990.

MLA (9th ed.) Citation

Congreve, William. The Double-dealer, a Comedy. Project Gutenberg, 1990.

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