Gaya APA

M.E., J, K. (1942). Coal In The East-Indian Archipelago Java . Bandung: Pusat Sumber Daya Geologi.

Gaya MLA

M.E., J., Kleinsmiede. "Coal In The East-Indian Archipelago Java". Bandung: Pusat Sumber Daya Geologi, 1942. Batubara.