Barber, B., & Happel, C. CompTIA Linux+ Certification study guide: Exam XK0-003. Elsevier Science & Technology Books.
Style de citation Chicago (17e éd.)Barber, Brian, et Chris Happel. CompTIA Linux+ Certification Study Guide: Exam XK0-003. San Diego (Calif.): Elsevier Science & Technology Books.
Style de citation MLA (8e éd.)Barber, Brian, et Chris Happel. CompTIA Linux+ Certification Study Guide: Exam XK0-003. Elsevier Science & Technology Books.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.