APA (7th ed.) Citation

Duffield, J. W. (2012). Bert Wilson's Twin Cylinder Racer. Project Gutenberg.

Chicago Style (17th ed.) Citation

Duffield, J. W. Bert Wilson's Twin Cylinder Racer. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Duffield, J. W. Bert Wilson's Twin Cylinder Racer. Project Gutenberg, 2012.

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