APA (7th ed.) Citation

Grable, F. C., & True, A. T. (2011). Colorado-The Bright Romance of American History. Project Gutenberg.

Chicago Style (17th ed.) Citation

Grable, F. C., and Allen Tupper True. Colorado-The Bright Romance of American History. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Grable, F. C., and Allen Tupper True. Colorado-The Bright Romance of American History. Project Gutenberg, 2011.

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