APA (7th ed.) Citation

Landis, M. M. (2010). The 3CX IP PBX tutorial: Develop a fully functional, low cost, professional PBX phone system using 3CX. Packt Pub.

Chicago Style (17th ed.) Citation

Landis, Matthew M. The 3CX IP PBX Tutorial: Develop a Fully Functional, Low Cost, Professional PBX Phone System Using 3CX. Birmingham [England]: Packt Pub, 2010.

MLA (9th ed.) Citation

Landis, Matthew M. The 3CX IP PBX Tutorial: Develop a Fully Functional, Low Cost, Professional PBX Phone System Using 3CX. Packt Pub, 2010.