Gaya APA

Kartokusumo, W, S. (1979). The Preliminary Geothemical Investigation of The Geothermal Areas of The Bolaang Mongondow DIstrict and The Southern Part Minahasa DIstrict (July 1979). Washington: Volcanological Survey of Indonesia.

Gaya MLA

Kartokusumo, Wishnu, S.. "The Preliminary Geothemical Investigation of The Geothermal Areas of The Bolaang Mongondow DIstrict and The Southern Part Minahasa DIstrict". July 1979 Washington: Volcanological Survey of Indonesia, 1979. Text.