Gaya APA

Johari, S. (1978). Third Regional Conference On Geology And Mineral Resources Of Southeast Asia The Tangse Copper/Molybdenum Prospect,North Sumatra . Bandung: Pusat Sumber Daya Geologi.

Gaya MLA

Johari, S.. "Third Regional Conference On Geology And Mineral Resources Of Southeast Asia The Tangse Copper/Molybdenum Prospect,North Sumatra". Bandung: Pusat Sumber Daya Geologi, 1978. Bukan Logam.