APA (7th ed.) Citation

Tolstoy, L., Maude, L., & Maude, A. (2006). Father Sergius. Project Gutenberg.

Chicago Style (17th ed.) Citation

Tolstoy, Leo, Louise Maude, and Aylmer Maude. Father Sergius. Project Gutenberg, 2006.

MLA (9th ed.) Citation

Tolstoy, Leo, et al. Father Sergius. Project Gutenberg, 2006.

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