(1978). International telecommunications: Challenge and change in the 1980s. Amsterdam.
استشهاد بنمط شيكاغوInternational Telecommunications: Challenge and Change in the 1980s. Amsterdam, 1978.
MLA استشهادInternational Telecommunications: Challenge and Change in the 1980s. Amsterdam, 1978.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.