APA (7th ed.) Citation

Mills, W. W., & Lea, T. (1962). Forty years at El Paso, 1858-1898 (Variant copy.). Carl Hertzog.

Chicago Style (17th ed.) Citation

Mills, W. W., and Tom Lea. Forty Years at El Paso, 1858-1898. Variant copy. El Paso, Texas: Carl Hertzog, 1962.

MLA (9th ed.) Citation

Mills, W. W., and Tom Lea. Forty Years at El Paso, 1858-1898. Variant copy. Carl Hertzog, 1962.