APA (7th ed.) Citation

Addison, C. G. (2013). The Knights Templars. Project Gutenberg.

Chicago Style (17th ed.) Citation

Addison, C. G. The Knights Templars. Project Gutenberg, 2013.

MLA (9th ed.) Citation

Addison, C. G. The Knights Templars. Project Gutenberg, 2013.

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