Gaya APA

GUNTHER, D. (1956). PRELIMINARY REPORT ON THE REHABILITATION OF THE OMBILIN COAL MINES."WEDEXRO"1956 , V0L.3 FASC.3C. . Bandung: Direktorat Batubara.

Gaya MLA

GUNTHER, DR.ING.C.. "PRELIMINARY REPORT ON THE REHABILITATION OF THE OMBILIN COAL MINES."WEDEXRO"1956 , V0L.3 FASC.3C.". Bandung: Direktorat Batubara, 1956. Batubara.