Gaya APA

Purbawinata, M, A. (1990). Petrology and Geochemistry of the Guntur-Gandapura Volcanic Complex, West Java Indonesia . Indonesia: University Otago.

Gaya MLA

Purbawinata, Mas, Ajie. "Petrology and Geochemistry of the Guntur-Gandapura Volcanic Complex, West Java Indonesia". Indonesia: University Otago, 1990. Text.