Gaya APA

venture, O, G. (1983). Directorat general of mines South sumatera coal exploration project analysis of coal from hd series muara tiga Borecholes . Bandung: Pusat Sumber Daya Geologi.

Gaya MLA

venture, Otto, Gold. "Directorat general of mines South sumatera coal exploration project analysis of coal from hd series muara tiga Borecholes". Bandung: Pusat Sumber Daya Geologi, 1983. Batubara.