APA (7th ed.) Citation

Duffield, J. W. (2010). Bert Wilson at Panama. Project Gutenberg.

Chicago Style (17th ed.) Citation

Duffield, J. W. Bert Wilson at Panama. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Duffield, J. W. Bert Wilson at Panama. Project Gutenberg, 2010.

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