APA (7th ed.) Citation

Page, T. N., & Keep, V. (2010). Two Prisoners. Project Gutenberg.

Chicago Style (17th ed.) Citation

Page, Thomas Nelson, and Virginia Keep. Two Prisoners. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Page, Thomas Nelson, and Virginia Keep. Two Prisoners. Project Gutenberg, 2010.

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