APA (7th ed.) Citation

Yeats, W. B. (2004). The Secret Rose. Project Gutenberg.

Chicago Style (17th ed.) Citation

Yeats, W. B. The Secret Rose. Project Gutenberg, 2004.

MLA (9th ed.) Citation

Yeats, W. B. The Secret Rose. Project Gutenberg, 2004.

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