APA (7th ed.) Citation

Yeats, W. B., & Moore, T. S. (2011). Responsibilities and other poems. Project Gutenberg.

Chicago Style (17th ed.) Citation

Yeats, W. B., and T. Sturge Moore. Responsibilities and Other Poems. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Yeats, W. B., and T. Sturge Moore. Responsibilities and Other Poems. Project Gutenberg, 2011.

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