APA (7th ed.) Citation

Todino, G., Strang, J., & Peek, J. (1993). Learning the UNIX operating system (3a. ed.). O'Reilly.

Chicago Style (17th ed.) Citation

Todino, Grace, John Strang, and Jerry Peek. Learning the UNIX Operating System. 3a. ed. Sebastopol: O'Reilly, 1993.

MLA (9th ed.) Citation

Todino, Grace, et al. Learning the UNIX Operating System. 3a. ed. O'Reilly, 1993.