Gaya APA
Chang, K, T. (2004).
(PASCA) Introduction to Geographic Information System (Edisi 2).
Singapore:
Mc Graw-Hill International Book Company.
Gaya MLA
Chang, Kang, Tsung.
"(PASCA) Introduction to Geographic Information System".
Edisi 2
Singapore:
Mc Graw-Hill International Book Company,
2004.
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