Swale, R. (2002). Voice over IP: Systems and solutions. The Institution of Electrical Engineers.
استشهاد بنمط شيكاغوSwale, Richard. Voice over IP: Systems and Solutions. London: The Institution of Electrical Engineers, 2002.
MLA استشهادSwale, Richard. Voice over IP: Systems and Solutions. The Institution of Electrical Engineers, 2002.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.