APA (7th ed.) Citation

Twiss, T. (2012). The Oregon Territory Its History and Discovery. Project Gutenberg.

Chicago Style (17th ed.) Citation

Twiss, Travers. The Oregon Territory Its History and Discovery. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Twiss, Travers. The Oregon Territory Its History and Discovery. Project Gutenberg, 2012.

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