APA (7th ed.) Citation

Carling, J. R. (2012). The Shadow of the Czar. Project Gutenberg.

Chicago Style (17th ed.) Citation

Carling, John R. The Shadow of the Czar. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Carling, John R. The Shadow of the Czar. Project Gutenberg, 2012.

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