APA (7th ed.) Citation

Parrish, R., Kinney, T., & Kinney, M. W. (2009). Beyond the Frontier: A Romance of Early Days in the Middle West. Project Gutenberg.

Chicago Style (17th ed.) Citation

Parrish, Randall, Troy Kinney, and Margaret West Kinney. Beyond the Frontier: A Romance of Early Days in the Middle West. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Parrish, Randall, et al. Beyond the Frontier: A Romance of Early Days in the Middle West. Project Gutenberg, 2009.

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