Gaya APA

Page, B. (1977). Proceedings Of The Second Symposium Integrated Geological Survey Of Northen Sumatra Page 103-161 . Bandung: Direktorat Sumber Daya Mineral.

Gaya MLA

Page, B.G.N.. "Proceedings Of The Second Symposium Integrated Geological Survey Of Northen Sumatra Page 103-161". Bandung: Direktorat Sumber Daya Mineral, 1977. Text.