Gaya APA

Dr.F.Laufer, . (1945). Results Of An Investigation By Core Driling Of The Pliocene Limestone near Gresik (Res. Surabaya) 9 Enclosures . Bandung: Pusat Sumber Daya Geologi.

Gaya MLA

Dr.F.Laufer, . "Results Of An Investigation By Core Driling Of The Pliocene Limestone near Gresik (Res. Surabaya) 9 Enclosures". Bandung: Pusat Sumber Daya Geologi, 1945. Bukan Logam.