APA (7th ed.) Citation

Miller, G. A., Best, A. W., & Best, A. (2012). Prowling about Panama. Project Gutenberg.

Chicago Style (17th ed.) Citation

Miller, George A., A. W. Best, and Alice Best. Prowling About Panama. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Miller, George A., et al. Prowling About Panama. Project Gutenberg, 2012.

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