Gaya APA

A.djunuddin, ., Hariwidjaja, . (1980). Simple Methods For Locating Geochemical Anomalies In Northeren Sumatra . Bandung: Direktorat Inventarisasi Sumber Daya Mineral.

Gaya MLA

A.djunuddin, ., Hariwidjaja, . "Simple Methods For Locating Geochemical Anomalies In Northeren Sumatra". Bandung: Direktorat Inventarisasi Sumber Daya Mineral, 1980. Logam.