APA (7th ed.) Citation

Fresenborg, B. (2006). "Thirty Years In Hell" Or, "From Darkness to Light". Project Gutenberg.

Chicago Style (17th ed.) Citation

Fresenborg, Bernard. "Thirty Years In Hell" Or, "From Darkness to Light". Project Gutenberg, 2006.

MLA (9th ed.) Citation

Fresenborg, Bernard. "Thirty Years In Hell" Or, "From Darkness to Light". Project Gutenberg, 2006.

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