Gaya APA

Tjetjep, W, S. (1994). Journal of Volcanic Activity in Indonesia Vol. 2 No. 1 (Maret 1994). Bandung: MINISTRY OF MINES AND ENERGY.

Gaya MLA

Tjetjep, Wimpy, S. "Journal of Volcanic Activity in Indonesia Vol. 2 No. 1". Maret 1994 Bandung: MINISTRY OF MINES AND ENERGY, 1994. Text.