APA (7th ed.) Citation

Doyle, A. C. (2004). The Great Shadow and Other Napoleonic Tales. Project Gutenberg.

Chicago Style (17th ed.) Citation

Doyle, Arthur Conan. The Great Shadow and Other Napoleonic Tales. Project Gutenberg, 2004.

MLA (9th ed.) Citation

Doyle, Arthur Conan. The Great Shadow and Other Napoleonic Tales. Project Gutenberg, 2004.

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