APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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