APA (7th ed.) Citation

Collins, W. (2010). The queen of hearts. Project Gutenberg.

Chicago Style (17th ed.) Citation

Collins, Wilkie. The Queen of Hearts. To be supplied: Project Gutenberg, 2010.

MLA (8th ed.) Citation

Collins, Wilkie. The Queen of Hearts. Project Gutenberg, 2010.

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