APA (7th ed.) Citation

Colum, P., & Walker, D. S. (2008). The Boy Who Knew What The Birds Said. Project Gutenberg.

Chicago Style (17th ed.) Citation

Colum, Padraic, and Dugald Stewart Walker. The Boy Who Knew What The Birds Said. Project Gutenberg, 2008.

MLA (9th ed.) Citation

Colum, Padraic, and Dugald Stewart Walker. The Boy Who Knew What The Birds Said. Project Gutenberg, 2008.

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