APA (7th ed.) Citation

Burnham, M. (2004). The Girl Aviators' Sky Cruise. Project Gutenberg.

Chicago Style (17th ed.) Citation

Burnham, Margaret. The Girl Aviators' Sky Cruise. Project Gutenberg, 2004.

MLA (9th ed.) Citation

Burnham, Margaret. The Girl Aviators' Sky Cruise. Project Gutenberg, 2004.

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