Gaya APA

S, U, &, K. (1969). Limestone Deposits In Riau Daratan Djambi-Northern Part Of South Sumatra ,Central & Southeast Kalimantan And The Shouthern Part Of West Irian . Bandung: Departemen Pertambangan Direktorat Jendral Pertambangan Direktorat Geologi.

Gaya MLA

S, U.Djumarna, &, Kadar. "Limestone Deposits In Riau Daratan Djambi-Northern Part Of South Sumatra ,Central & Southeast Kalimantan And The Shouthern Part Of West Irian". Bandung: Departemen Pertambangan Direktorat Jendral Pertambangan Direktorat Geologi, 1969. Bukan Logam.