APA (7th ed.) Citation

Blake, W. (2014). The Marriage of Heaven and Hell. Project Gutenberg.

Chicago Style (17th ed.) Citation

Blake, William. The Marriage of Heaven and Hell. Project Gutenberg, 2014.

MLA (9th ed.) Citation

Blake, William. The Marriage of Heaven and Hell. Project Gutenberg, 2014.

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