APA (7th ed.) Citation

Varhol, P. D. (1993). Implementing Unix in the 1990s (2. ed.). Computer Technology Research Corp.

Chicago Style (17th ed.) Citation

Varhol, Peter D. Implementing Unix in the 1990s. 2. ed. Charleston, South Carolina: Computer Technology Research Corp, 1993.

MLA (9th ed.) Citation

Varhol, Peter D. Implementing Unix in the 1990s. 2. ed. Computer Technology Research Corp, 1993.