APA (7th ed.) Citation

Norton, A., Austin, N., McNutt, C., & Murphy, R. K. (2010). The People of the Crater. Project Gutenberg.

Chicago Style (17th ed.) Citation

Norton, Andre, Neil Austin, Charles McNutt, and R. K. Murphy. The People of the Crater. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Norton, Andre, et al. The People of the Crater. Project Gutenberg, 2010.

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