APA

Goncalves (Marcus), . (1999). Voice Over Ip Networks.W/Cd. : .

Chicago

Goncalves (Marcus), . 1999. Voice Over Ip Networks.W/Cd. : .

Harvard

Goncalves (Marcus), . (1999). Voice Over Ip Networks.W/Cd. : .

MLA

Goncalves (Marcus), . Voice Over Ip Networks.W/Cd. : . 1999.