Charles, D. (1989). Technology and Competition in the International Telecommunications Industry. London: Pinter Publishers.
استشهاد بنمط شيكاغوCharles, David. Technology and Competition in the International Telecommunications Industry. London: Pinter Publishers, 1989.
MLA استشهادCharles, David. Technology and Competition in the International Telecommunications Industry. London: Pinter Publishers, 1989.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.