APA Style

Bresnahan, C., Blum, R. (2020). Comptia linux+ 4E study guide with online labs: xk0-004 exam (4th ed.). Indiana: Wiley.

MLA Style

Bresnahan, Christine., Blum, Richard. "Comptia linux+ 4E study guide with online labs: xk0-004 exam". 4th ed. Indiana: Wiley, 2020. Text.