Lammle, T. (2013). CCNA Cisco Certified Network Associate Study Guide (8th ed.). Sybex.
Cita Chicago (17th ed.)Lammle, Todd. CCNA Cisco Certified Network Associate Study Guide. 8th ed. Indianapolis, IN: Sybex, 2013.
Cita MLA (9th ed.)Lammle, Todd. CCNA Cisco Certified Network Associate Study Guide. 8th ed. Sybex, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.