APA (7th ed.) Citation

Old Sleuth, 1. (2008). A Successful Shadow; Or, A Detective's Successful Quest. Project Gutenberg.

Chicago Style (17th ed.) Citation

Old Sleuth, 1839?-1898. A Successful Shadow; Or, A Detective's Successful Quest. Project Gutenberg, 2008.

MLA (9th ed.) Citation

Old Sleuth, 1839?-1898. A Successful Shadow; Or, A Detective's Successful Quest. Project Gutenberg, 2008.

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