APA (7th ed.) Citation

Wilde, O. (1996). The importance of being earnest: A trivial comedy for serious people. London /A & C Black.

Chicago Style (17th ed.) Citation

Wilde, Oscar. The Importance of Being Earnest: A Trivial Comedy for Serious People. New York: London /A & C Black, 1996.

MLA (9th ed.) Citation

Wilde, Oscar. The Importance of Being Earnest: A Trivial Comedy for Serious People. London /A & C Black, 1996.