APA (7th ed.) Citation

Heckethorn, C. W. (2013). London Souvenirs. Project Gutenberg.

Chicago Style (17th ed.) Citation

Heckethorn, Charles William. London Souvenirs. Project Gutenberg, 2013.

MLA (9th ed.) Citation

Heckethorn, Charles William. London Souvenirs. Project Gutenberg, 2013.

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