APA (7th ed.) Citation

Bresnahan, C., & Blum, R. (2015). Linux essentials (Second edition.). Sybex, a Wiley brand.

Chicago Style (17th ed.) Citation

Bresnahan, Christine, and Richard Blum. Linux Essentials. Second edition. Indianapolis, Indiana: Sybex, a Wiley brand, 2015.

MLA (9th ed.) Citation

Bresnahan, Christine, and Richard Blum. Linux Essentials. Second edition. Sybex, a Wiley brand, 2015.

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