APA (7th ed.) Citation

Ritchie, J. E. (2010). About London. Project Gutenberg.

Chicago Style (17th ed.) Citation

Ritchie, J. Ewing. About London. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Ritchie, J. Ewing. About London. Project Gutenberg, 2010.

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