APA (7th ed.) Citation

Hartling, J. M., Druffel, L. E., & Hilbing, F. J. Introduction to computer programming.

Chicago Style (17th ed.) Citation

Hartling, John M., Larry E. Druffel, and F. Jack Hilbing. Introduction to Computer Programming.

MLA (9th ed.) Citation

Hartling, John M., et al. Introduction to Computer Programming.