APA (7th ed.) Citation

Snell, R. J. (2014). Sign of the Green Arrow A Mystery Story. Project Gutenberg.

Chicago Style (17th ed.) Citation

Snell, Roy J. Sign of the Green Arrow A Mystery Story. Project Gutenberg, 2014.

MLA (9th ed.) Citation

Snell, Roy J. Sign of the Green Arrow A Mystery Story. Project Gutenberg, 2014.

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