Gaya APA

1506, D, G, -, G, L, N. (). Report on engineering geological investigation at the alumunium plant site at Mabar, Medan, North Sumatera . : .

Gaya MLA

1506, DIREKTORAT, GEOLOGI, -, GTH, Lap., No.. "Report on engineering geological investigation at the alumunium plant site at Mabar, Medan, North Sumatera". : , . Laporan.