APA (7th ed.) Citation

Doyle, A. C. (1999). The New Revelation. Project Gutenberg.

Chicago Style (17th ed.) Citation

Doyle, Arthur Conan. The New Revelation. Project Gutenberg, 1999.

MLA (9th ed.) Citation

Doyle, Arthur Conan. The New Revelation. Project Gutenberg, 1999.

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