APA (7th ed.) Citation

Cox, M. B., & Pierce, A. (2010). Left on the Prairie. Project Gutenberg.

Chicago Style (17th ed.) Citation

Cox, M. B., and A. Pierce. Left on the Prairie. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Cox, M. B., and A. Pierce. Left on the Prairie. Project Gutenberg, 2010.

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