APA (7th ed.) Citation

Twain, M. (1997). Extract from Captain Stormfield's Visit to Heaven. Project Gutenberg.

Chicago Style (17th ed.) Citation

Twain, Mark. Extract from Captain Stormfield's Visit to Heaven. Project Gutenberg, 1997.

MLA (9th ed.) Citation

Twain, Mark. Extract from Captain Stormfield's Visit to Heaven. Project Gutenberg, 1997.

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