APA (7th ed.) Citation

Duffield, J. W. (2012). Bert Wilson, Marathon Winner. Project Gutenberg.

Chicago Style (17th ed.) Citation

Duffield, J. W. Bert Wilson, Marathon Winner. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Duffield, J. W. Bert Wilson, Marathon Winner. Project Gutenberg, 2012.

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