Cita APA (7a ed.)

Bresnahan, C., & Blum, R. (2015). LPIC-1: Linux Professional Institute Certification study guide : exams 101-400 and 102-400 (4th ed.). Sybex.

Cita Chicago Style (17a ed.)

Bresnahan, Christine, y Richard Blum. LPIC-1: Linux Professional Institute Certification Study Guide : Exams 101-400 and 102-400. 4th ed. Indianapolis, Indiana: Sybex, 2015.

Cita MLA (9a ed.)

Bresnahan, Christine, y Richard Blum. LPIC-1: Linux Professional Institute Certification Study Guide : Exams 101-400 and 102-400. 4th ed. Sybex, 2015.