APA

Gonçalves M., . (1998). Voice over IP networks. New York [u.a.]: McGraw-Hill.

Chicago

Gonçalves Marcus, . 1998. Voice over IP networks. New York [u.a.]: McGraw-Hill.

Harvard

Gonçalves M., . (1998). Voice over IP networks. New York [u.a.]: McGraw-Hill.

MLA

Gonçalves Marcus, . Voice over IP networks. New York [u.a.]: McGraw-Hill. 1998.