Gaya APA
Tjetjep, W, S. (1993).
Journal of Volcanic Activity in Indonesia Vol. 1 No. 3 & 4 (Desember 1993).
Bandung:
MINISTRY OF MINES AND ENERGY.
Gaya MLA
Tjetjep, Wimpy, S.
"Journal of Volcanic Activity in Indonesia Vol. 1 No. 3 & 4".
Desember 1993
Bandung:
MINISTRY OF MINES AND ENERGY,
1993.
Text.