APA (7th ed.) Citation

Wilde, O. (2008). The Importance of Being Earnest. Project Gutenberg.

Chicago Style (17th ed.) Citation

Wilde, Oscar. The Importance of Being Earnest. Project Gutenberg, 2008.

MLA (9th ed.) Citation

Wilde, Oscar. The Importance of Being Earnest. Project Gutenberg, 2008.

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