APA (7th ed.) Citation

Shelly, G. B., & Cashman, T. J. (1972). Introduction to computer programming RPG. Anaheim Pub. Co.

Chicago Style (17th ed.) Citation

Shelly, Gary B., and Thomas J. Cashman. Introduction to Computer Programming RPG. Fullerton, Calif: Anaheim Pub. Co, 1972.

MLA (9th ed.) Citation

Shelly, Gary B., and Thomas J. Cashman. Introduction to Computer Programming RPG. Anaheim Pub. Co, 1972.