APA (7th ed.) Citation

Ritchie, J. E. (2011). Cities of the Dawn. Project Gutenberg.

Chicago Style (17th ed.) Citation

Ritchie, J. Ewing. Cities of the Dawn. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Ritchie, J. Ewing. Cities of the Dawn. Project Gutenberg, 2011.

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