APA (7th ed.) Citation

Thompson, F. (1998). Shelley: An Essay. Project Gutenberg.

Chicago Style (17th ed.) Citation

Thompson, Francis. Shelley: An Essay. Project Gutenberg, 1998.

MLA (9th ed.) Citation

Thompson, Francis. Shelley: An Essay. Project Gutenberg, 1998.

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