Gaya APA
DIVIT, M, &, J, F.
(1990).
MINERAL DEVELOPMENT IN ASIA THE PACIFIC
.
Jakarta:
AFMA.
Gaya MLA
DIVIT, M.SIMATUPANG, &, JAMES, F.Mc.
"MINERAL DEVELOPMENT IN ASIA THE PACIFIC".
Jakarta:
AFMA,
1990.
Textbook.