Gaya APA
Mahler, A., Sabirin, N. (2009).
From Grasberg to Amamapare Copper & Gold Minning Process .
Jakarta:
Aksara Buana.
Gaya MLA
Mahler, Armando., Sabirin, Nurhadi.
"From Grasberg to Amamapare Copper & Gold Minning Process".
Jakarta:
Aksara Buana,
2009.
Text.