APA (7th ed.) Citation

Wilde, O., Billington, M., & Wilson, R. (1983). The importance of being earnest. Penguin.

Chicago Style (17th ed.) Citation

Wilde, Oscar, Michael Billington, and Robert Wilson. The Importance of Being Earnest. New York: Penguin, 1983.

MLA (9th ed.) Citation

Wilde, Oscar, et al. The Importance of Being Earnest. Penguin, 1983.