Παραπομπή APA

Swale, R. (2002). Voice over IP: Systems and solutions. The Institution of Electrical Engineers.

Παραπομπή Chicago Style

Swale, Richard. Voice over IP: Systems and Solutions. London: The Institution of Electrical Engineers, 2002.

Παραπομπή MLA

Swale, Richard. Voice over IP: Systems and Solutions. The Institution of Electrical Engineers, 2002.