APA (7th ed.) Citation

Unknown. (2009). The Mysterious Murder of Pearl Bryan or: The Headless Horror. Project Gutenberg.

Chicago Style (17th ed.) Citation

Unknown. The Mysterious Murder of Pearl Bryan or: The Headless Horror. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Unknown. The Mysterious Murder of Pearl Bryan or: The Headless Horror. Project Gutenberg, 2009.

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