Gaya APA

Chang, K. (2008). Introduction to geographic information systems (4 th Ed, 4 th Reprint). New Delhi: Tata McGraw-Hill Company Limited.

Gaya MLA

Chang, Kang-tsung. "Introduction to geographic information systems". 4 th Ed, 4 th Reprint New Delhi: Tata McGraw-Hill Company Limited, 2008. Text.