Cita APA (7a ed.)
Goncalves, F. E. (2008). Building telephony systems with OpenSER: A step-by-step guide to building a high-performance telephony system. Packt.
Cita Chicago Style (17a ed.)
Goncalves, Flavio E. Building Telephony Systems with OpenSER: A Step-by-step Guide to Building a High-performance Telephony System. Birmingham: Packt, 2008.
Cita MLA (9a ed.)
Goncalves, Flavio E. Building Telephony Systems with OpenSER: A Step-by-step Guide to Building a High-performance Telephony System. Packt, 2008.
Precaución: Estas citas no son 100% exactas.