Gaya APA
Pugel. (2016).
International economics (Sixteenth).
New York:
Mc Graw Hill International.
Gaya Chicago
Pugel.
International economics.
Sixteenth
New York:
Mc Graw Hill International,
2016.
Text.
Gaya MLA
Pugel.
International economics.
Sixteenth
New York:
Mc Graw Hill International,
2016.
Text.
Gaya Turabian
Pugel.
International economics.
Sixteenth
New York:
Mc Graw Hill International,
2016.
Print.