APA (7th ed.) Citation

Gibbon, P. (2007). Those Who Smiled And Eleven Other Stories. Project Gutenberg.

Chicago Style (17th ed.) Citation

Gibbon, Perceval. Those Who Smiled And Eleven Other Stories. Project Gutenberg, 2007.

MLA (9th ed.) Citation

Gibbon, Perceval. Those Who Smiled And Eleven Other Stories. Project Gutenberg, 2007.

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