APA (7th ed.) Citation

Bradley, M. Z., & Novick, I. H. (2010). The Planet Savers. Project Gutenberg.

Chicago Style (17th ed.) Citation

Bradley, Marion Zimmer, and Irving H. Novick. The Planet Savers. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Bradley, Marion Zimmer, and Irving H. Novick. The Planet Savers. Project Gutenberg, 2010.

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