APA (7th ed.) Citation

Abbott, J. (2009). Genghis Khan, Makers of History Series. Project Gutenberg.

Chicago Style (17th ed.) Citation

Abbott, Jacob. Genghis Khan, Makers of History Series. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Abbott, Jacob. Genghis Khan, Makers of History Series. Project Gutenberg, 2009.

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