Gaya APA

H.Hamidsyah, ., Clarke, M. (1981). RYMARY TIN & TUNGSTEN MINERALIZATI- ON IN N. SUMATRA. (A case history) . Bandung: Directorate Of Mineral Resources.

Gaya MLA

H.Hamidsyah, ., Clarke, M.C.G.. "RYMARY TIN & TUNGSTEN MINERALIZATI- ON IN N. SUMATRA. (A case history)". Bandung: Directorate Of Mineral Resources, 1981. Bukan Logam.