APA (7th ed.) Citation

Williamson, C. N., Williamson, A. M., Buckland, A. H., & Bracker, M. L. (2006). The Guests Of Hercules. Project Gutenberg.

Chicago Style (17th ed.) Citation

Williamson, C. N., A. M. Williamson, Arthur H. Buckland, and M. Leone Bracker. The Guests Of Hercules. Project Gutenberg, 2006.

MLA (9th ed.) Citation

Williamson, C. N., et al. The Guests Of Hercules. Project Gutenberg, 2006.

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