APA (7th ed.) Citation

Gobbell, J. J. (1999). A code for tomorrow. St. Martin's Press.

Chicago Style (17th ed.) Citation

Gobbell, John J. A Code for Tomorrow. New York: St. Martin's Press, 1999.

MLA (8th ed.) Citation

Gobbell, John J. A Code for Tomorrow. St. Martin's Press, 1999.