Gaya APA
Hettne,Bjorn. (1991).
Development Theory and Three World .
New York:
Longman Scientific and Technical.
Gaya Chicago
Hettne,Bjorn.
Development Theory and Three World.
New York:
Longman Scientific and Technical,
1991.
Text.
Gaya MLA
Hettne,Bjorn.
Development Theory and Three World.
New York:
Longman Scientific and Technical,
1991.
Text.
Gaya Turabian
Hettne,Bjorn.
Development Theory and Three World.
New York:
Longman Scientific and Technical,
1991.
Print.