Gaya APA

Elifas, J, D. (1973). Topographic, Geologio mapping and preliminary ground investigation on the proposed site of the foundry centre project, P.T.BARATA METALWORK & ENGINERING at sukamadu area, Gresik. EAST JAVA . Bandung: Direktorat Geologi-Dinad Geologi Tenik-Hidrogeologi.

Gaya MLA

Elifas, Joedo, D.. "Topographic, Geologio mapping and preliminary ground investigation on the proposed site of the foundry centre project, P.T.BARATA METALWORK & ENGINERING at sukamadu area, Gresik. EAST JAVA". Bandung: Direktorat Geologi-Dinad Geologi Tenik-Hidrogeologi, 1973. Logam.