Chang, K. (2002). Introduction to geographic information systems. New Delhi: McGraw-Hill Higher Education.
استشهاد بنمط شيكاغوChang, Kang-Tsung. Introduction to Geographic Information Systems. New Delhi: McGraw-Hill Higher Education, 2002.
MLA استشهادChang, Kang-Tsung. Introduction to Geographic Information Systems. New Delhi: McGraw-Hill Higher Education, 2002.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.