APA (7th ed.) Citation

Poe, E. A. (1997). The Fall of the House of Usher. Project Gutenberg.

Chicago Style (17th ed.) Citation

Poe, Edgar Allan. The Fall of the House of Usher. Project Gutenberg, 1997.

MLA (9th ed.) Citation

Poe, Edgar Allan. The Fall of the House of Usher. Project Gutenberg, 1997.

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