APA (7th ed.) Citation

Crockett, S. R., & Richards, F. (2006). The Black Douglas. Project Gutenberg.

Chicago Style (17th ed.) Citation

Crockett, S. R., and Frank Richards. The Black Douglas. Project Gutenberg, 2006.

MLA (9th ed.) Citation

Crockett, S. R., and Frank Richards. The Black Douglas. Project Gutenberg, 2006.

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