Cita APA (7a ed.)

Holcombe, J., & Wempen, F. (2017). CompTIA A+ certification study guide (exams 220-901 & 220-902) (Ninth edition.). McGraw-Hill Education.

Cita Chicago Style (17a ed.)

Holcombe, Jane, y Faithe Wempen. CompTIA A+ Certification Study Guide (exams 220-901 & 220-902). Ninth edition. New York: McGraw-Hill Education, 2017.

Cita MLA (9a ed.)

Holcombe, Jane, y Faithe Wempen. CompTIA A+ Certification Study Guide (exams 220-901 & 220-902). Ninth edition. McGraw-Hill Education, 2017.