APA (7th ed.) Citation

Eckhouse, R. (1988). The PC as a graphics engine. Computer, 21, 66.

Chicago Style (17th ed.) Citation

Eckhouse, Richard. "The PC as a Graphics Engine." Computer 21 (1988): 66.

MLA (9th ed.) Citation

Eckhouse, Richard. "The PC as a Graphics Engine." Computer, vol. 21, 1988, p. 66.