APA (7th ed.) Citation

Campbell, G. F. (1918). A soldier of the sky. Davis Printing Works.

Chicago Style (17th ed.) Citation

Campbell, George Frederick. A Soldier of the Sky. Chicago: Davis Printing Works, 1918.

MLA (9th ed.) Citation

Campbell, George Frederick. A Soldier of the Sky. Davis Printing Works, 1918.

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