APA (7th ed.) Citation

Hawkins, W. J. (1982). Goodbye, typewriter; hello, word processor. Popular Science, 220(2), 79.

Chicago Style (17th ed.) Citation

Hawkins, William J. "Goodbye, Typewriter; Hello, Word Processor." Popular Science 220, no. 2 (1982): 79.

MLA (9th ed.) Citation

Hawkins, William J. "Goodbye, Typewriter; Hello, Word Processor." Popular Science, vol. 220, no. 2, 1982, p. 79.