APA (7th ed.) Citation

Yeats, W. B., & Gregory, L. (2008). The Unicorn from the Stars and Other Plays. Project Gutenberg.

Chicago Style (17th ed.) Citation

Yeats, W. B., and Lady Gregory. The Unicorn from the Stars and Other Plays. Project Gutenberg, 2008.

MLA (9th ed.) Citation

Yeats, W. B., and Lady Gregory. The Unicorn from the Stars and Other Plays. Project Gutenberg, 2008.

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