Gaya APA

Oba, N. (1983). Geochemical Study of Volcanic Products in Particular to Pumice Flow of The Krakatau Group Indonesia . Japan: Institute of Earth Sciences.

Gaya MLA

Oba, Noboru. "Geochemical Study of Volcanic Products in Particular to Pumice Flow of The Krakatau Group Indonesia". Japan: Institute of Earth Sciences, 1983. Text.