APA (7th ed.) Citation

Hornung, E. W. (2010). The Shadow of a Man. Project Gutenberg.

Chicago Style (17th ed.) Citation

Hornung, E. W. The Shadow of a Man. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Hornung, E. W. The Shadow of a Man. Project Gutenberg, 2010.

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