APA (7th ed.) Citation

Van Meter, C. E., & Calafiore, J. (1993). X O database. Valiant.

Chicago Style (17th ed.) Citation

Van Meter, Clifford E., and Jim Calafiore. X O Database. New York, NY: Valiant, 1993.

MLA (9th ed.) Citation

Van Meter, Clifford E., and Jim Calafiore. X O Database. Valiant, 1993.