APA (7th ed.) Citation

Clark, J. (2010). Penny Nichols and the Black Imp. Project Gutenberg.

Chicago Style (17th ed.) Citation

Clark, Joan. Penny Nichols and the Black Imp. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Clark, Joan. Penny Nichols and the Black Imp. Project Gutenberg, 2010.

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