Gaya APA
INDONESIA, D, O, M, A, E, R, O.
(1999).
Mining and energy yearbook of Indonesia, 1998
.
:
DPE.
Gaya MLA
INDONESIA, DEPARTMENT, OF, MINES, AND, ENERGY, REPUBLIC, OF.
"Mining and energy yearbook of Indonesia, 1998".
:
DPE,
1999.
Buku.