Gaya APA
Walther, Ted. (1997).
The World economy .
New York:
John Wiley.
Gaya Chicago
Walther, Ted.
The World economy.
New York:
John Wiley,
1997.
Buku.
Gaya MLA
Walther, Ted.
The World economy.
New York:
John Wiley,
1997.
Buku.
Gaya Turabian
Walther, Ted.
The World economy.
New York:
John Wiley,
1997.
Buku.