APA (7th ed.) Citation

Anthes, G. (2009). UNIX TURNS 40. Computerworld, 43(24), 16.

Chicago Style (17th ed.) Citation

Anthes, Gary. "UNIX TURNS 40." Computerworld 43, no. 24 (2009): 16.

MLA (9th ed.) Citation

Anthes, Gary. "UNIX TURNS 40." Computerworld, vol. 43, no. 24, 2009, p. 16.