APA (7th ed.) Citation

Sybex, Angell, D., & Heslop, B. D. (1990). Mastering SUNOS. Sybex.

Chicago Style (17th ed.) Citation

Sybex, David Angell, and Brent D. Heslop. Mastering SUNOS. San Francisco: Sybex, 1990.

MLA (8th ed.) Citation

Sybex, et al. Mastering SUNOS. Sybex, 1990.