APA (7th ed.) Citation

Doyle, A. C. (2005). The Mystery of Cloomber. Project Gutenberg.

Chicago Style (17th ed.) Citation

Doyle, Arthur Conan. The Mystery of Cloomber. Project Gutenberg, 2005.

MLA (9th ed.) Citation

Doyle, Arthur Conan. The Mystery of Cloomber. Project Gutenberg, 2005.

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