APA (7th ed.) Citation

Stahlman, M. D. (1989). UNIX versus OS/2. Black Book - Desktop Computer Market, 34.

Chicago Style (17th ed.) Citation

Stahlman, Mark D. "UNIX Versus OS/2." Black Book - Desktop Computer Market 1989: 34.

MLA (9th ed.) Citation

Stahlman, Mark D. "UNIX Versus OS/2." Black Book - Desktop Computer Market, 1989, p. 34.

Warning: These citations may not always be 100% accurate.