APA (7th ed.) Citation

Goldfrap, J. H., & Wrenn, C. L. (2011). The Boy Aviators' Flight for a Fortune. Project Gutenberg.

Chicago Style (17th ed.) Citation

Goldfrap, John Henry, and Charles L. Wrenn. The Boy Aviators' Flight for a Fortune. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Goldfrap, John Henry, and Charles L. Wrenn. The Boy Aviators' Flight for a Fortune. Project Gutenberg, 2011.

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