Gaya APA

G.trafomov, ., MADIADIPOERA, T. (). geological prospecting For coal at Sigihan(lower-Course of mahakam River region ,east kalimantan . Bandung: Direktorat Sumber Daya Mineral.

Gaya MLA

G.trafomov, ., MADIADIPOERA, TUSHADI. "geological prospecting For coal at Sigihan(lower-Course of mahakam River region ,east kalimantan". Bandung: Direktorat Sumber Daya Mineral, . Batubara.