Gaya APA

Hartmann, D, E. (1917). Geological Investigation Of The Recent Damage In The Sluice Of The Kawah Idjen . Bandung: Pusat Sumber Daya Geologi.

Gaya MLA

Hartmann, Dr., E.. "Geological Investigation Of The Recent Damage In The Sluice Of The Kawah Idjen". Bandung: Pusat Sumber Daya Geologi, 1917. Bukan Logam.