APA (7th ed.) Citation

Yeats, J. B., & Yeats, W. B. (2010). Irish Fairy Tales. Project Gutenberg.

Chicago Style (17th ed.) Citation

Yeats, Jack Butler, and W. B. Yeats. Irish Fairy Tales. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Yeats, Jack Butler, and W. B. Yeats. Irish Fairy Tales. Project Gutenberg, 2010.

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