APA (7th ed.) Citation

Riis, J. A. (2010). The Children of the Poor. Project Gutenberg.

Chicago Style (17th ed.) Citation

Riis, Jacob A. The Children of the Poor. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Riis, Jacob A. The Children of the Poor. Project Gutenberg, 2010.

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