APA Style
Orwel, George Orwel, George. (2006).
Black Gold : the frontier in oil for investors.-- .
New Jersey:
John & Sons.
Chicago Style
Orwel, George Orwel, George.
Black Gold : the frontier in oil for investors.--.
New Jersey:
John & Sons,
2006.
Buku.
MLA Style
Orwel, George Orwel, George.
Black Gold : the frontier in oil for investors.--.
New Jersey:
John & Sons,
2006.
Buku.
Turabian Style
Orwel, George Orwel, George.
Black Gold : the frontier in oil for investors.--.
New Jersey:
John & Sons,
2006.
Buku.