APA (7th ed.) Citation

Keats, J. (2005). Poems 1817. Project Gutenberg.

Chicago Style (17th ed.) Citation

Keats, John. Poems 1817. Project Gutenberg, 2005.

MLA (9th ed.) Citation

Keats, John. Poems 1817. Project Gutenberg, 2005.

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