Gaya APA

E, R, D. (1993). Journal of Vulcanic Activity in Indonesia Volume 1 Number 1 and 2 January - Juny 1993 . Bandung: Volcanological Survey of Indonesia.

Gaya MLA

E, Rizal, Dasoeki. "Journal of Vulcanic Activity in Indonesia Volume 1 Number 1 and 2 January - Juny 1993". Bandung: Volcanological Survey of Indonesia, 1993. Text.