APA (7th ed.) Citation

Hauptmann, G., Seltzer, T., & Seltzer, A. S. (2005). Atlantis. Project Gutenberg.

Chicago Style (17th ed.) Citation

Hauptmann, Gerhart, Thomas Seltzer, and Adele Szold Seltzer. Atlantis. Project Gutenberg, 2005.

MLA (9th ed.) Citation

Hauptmann, Gerhart, et al. Atlantis. Project Gutenberg, 2005.

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