Gaya APA

Ir., R, S. (1995). Journal of Volcanic Activity in Indonesia Vol. 3 No. 1 & 2 (Juni 1995). Bandung: MINISTRY OF MINES AND ENERGY.

Gaya MLA

Ir., R., Sukhyar,. "Journal of Volcanic Activity in Indonesia Vol. 3 No. 1 & 2". Juni 1995 Bandung: MINISTRY OF MINES AND ENERGY, 1995. Text.