APA (7th ed.) Citation

Berryman, J., & Douglas. (2008). Card Trick. Project Gutenberg.

Chicago Style (17th ed.) Citation

Berryman, John, and Douglas. Card Trick. Project Gutenberg, 2008.

MLA (9th ed.) Citation

Berryman, John, and Douglas. Card Trick. Project Gutenberg, 2008.

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