APA (7th ed.) Citation

MacGinn, E. M. (1993). At hard labor: Inmate labor at the Colorado State Penitentiary, 1871 - 1940. American university studies / 9.

Chicago Style (17th ed.) Citation

MacGinn, Elinor M. "At Hard Labor: Inmate Labor at the Colorado State Penitentiary, 1871 - 1940." American University Studies / 9 1993.

MLA (8th ed.) Citation

MacGinn, Elinor M. "At Hard Labor: Inmate Labor at the Colorado State Penitentiary, 1871 - 1940." American University Studies / 9, 1993.

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