Gaya APA

Ubaghs, J, G, H. (1963). Preliminary Report For The Months Of October, November and December Of The year - 1929 . Bandung: Pusat Sumber Daya Geologi.

Gaya MLA

Ubaghs, J., G., H.. "Preliminary Report For The Months Of October, November and December Of The year - 1929". Bandung: Pusat Sumber Daya Geologi, 1963. Logam.