Gaya APA

W.G., Z. (1962). Report Studying Of The Indonesian Coals. Ukrainian Scientific Research Institute (Ukhin) . Bandung: Direktorat Sumber Daya Mineral.

Gaya MLA

W.G., Zashquara. "Report Studying Of The Indonesian Coals. Ukrainian Scientific Research Institute (Ukhin)". Bandung: Direktorat Sumber Daya Mineral, 1962. Batubara.