APA (7th ed.) Citation

Boothby, G., & Piffard, H. (2012). 'Farewell, Nikola'. Project Gutenberg.

Chicago Style (17th ed.) Citation

Boothby, Guy, and Harold Piffard. 'Farewell, Nikola'. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Boothby, Guy, and Harold Piffard. 'Farewell, Nikola'. Project Gutenberg, 2012.

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