APA (7th ed.) Citation

Edge, L. B. (2009). Locked up: A history of the US prison system. Twenty-First Century Books.

Chicago Style (17th ed.) Citation

Edge, Laura B. Locked Up: A History of the US Prison System. Minneapolis: Twenty-First Century Books, 2009.

MLA (9th ed.) Citation

Edge, Laura B. Locked Up: A History of the US Prison System. Twenty-First Century Books, 2009.