Gaya APA
Walter, Ingo. (1975).
International economics (text).
New York:
The Ronald Press.
Gaya Chicago
Walter, Ingo.
International economics.
text
New York:
The Ronald Press,
1975.
.
Gaya MLA
Walter, Ingo.
International economics.
text
New York:
The Ronald Press,
1975.
.
Gaya Turabian
Walter, Ingo.
International economics.
text
New York:
The Ronald Press,
1975.
.