APA (7th ed.) Citation

Eckhouse, R. (1988). Alternative input devices. Computer, 21, 128.

Chicago Style (17th ed.) Citation

Eckhouse, Richard. "Alternative Input Devices." Computer 21 (1988): 128.

MLA (9th ed.) Citation

Eckhouse, Richard. "Alternative Input Devices." Computer, vol. 21, 1988, p. 128.