Penggayaan APA
PURBA, Achmad Zen Umar. (2009).
Production sharing contract : .
Jakarta:
Lembaga Pengkajian Hukum Int. UI.
Chicago Style
PURBA, Achmad Zen Umar.
Production sharing contract :.
Jakarta:
Lembaga Pengkajian Hukum Int. UI,
2009.
Artikel.
MLA Style
PURBA, Achmad Zen Umar.
Production sharing contract :.
Jakarta:
Lembaga Pengkajian Hukum Int. UI,
2009.
Artikel.
Turabian Style
PURBA, Achmad Zen Umar.
Production sharing contract :.
Jakarta:
Lembaga Pengkajian Hukum Int. UI,
2009.
Artikel.