Goncalves, F. E. (2008). Building telephony systems with OpenSER: A step-by-step guide to building a high-performance telephony system (1. publ.). Packt Publ.
Chicago Style (17th ed.) CitationGoncalves, Flavio E. Building Telephony Systems with OpenSER: A Step-by-step Guide to Building a High-performance Telephony System. 1. publ. Birmingham [u.a.]: Packt Publ, 2008.
MLA (9th ed.) CitationGoncalves, Flavio E. Building Telephony Systems with OpenSER: A Step-by-step Guide to Building a High-performance Telephony System. 1. publ. Packt Publ, 2008.
Warning: These citations may not always be 100% accurate.