Musngi, R. M., & Robles, K. (2006). An analysis of the Philippines as a hub for call center services. University of the Philippines Diliman Extension Program in Pampanga.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Musngi, Riandel M., و Kathyrine Robles. An Analysis of the Philippines as a Hub for Call Center Services. Pampanga: University of the Philippines Diliman Extension Program in Pampanga, 2006.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Musngi, Riandel M., و Kathyrine Robles. An Analysis of the Philippines as a Hub for Call Center Services. University of the Philippines Diliman Extension Program in Pampanga, 2006.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.