APA

Chandra Sekaran (S), Jayashree (L S), . (2004). Voice Over Internet Protocol (VOIP). : .

Chicago

Chandra Sekaran (S), Jayashree (L S), . 2004. Voice Over Internet Protocol (VOIP). : .

Harvard

Chandra Sekaran (S), Jayashree (L S), . (2004). Voice Over Internet Protocol (VOIP). : .

MLA

Chandra Sekaran (S), Jayashree (L S), . Voice Over Internet Protocol (VOIP). : . 2004.