APA (7th ed.) Citation

Zangwill, I. (2009). The Big Bow Mystery. Project Gutenberg.

Chicago Style (17th ed.) Citation

Zangwill, Israel. The Big Bow Mystery. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Zangwill, Israel. The Big Bow Mystery. Project Gutenberg, 2009.

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