APA (7th ed.) Citation

Kuprin, A. I. (2013). The Duel. Project Gutenberg.

Chicago Style (17th ed.) Citation

Kuprin, A. I. The Duel. Project Gutenberg, 2013.

MLA (9th ed.) Citation

Kuprin, A. I. The Duel. Project Gutenberg, 2013.

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