APA (7th ed.) Citation

Roy, L. E. (2011). Girl Scouts in the Rockies. Project Gutenberg.

Chicago Style (17th ed.) Citation

Roy, Lillian Elizabeth. Girl Scouts in the Rockies. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Roy, Lillian Elizabeth. Girl Scouts in the Rockies. Project Gutenberg, 2011.

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