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Gaya APA
Port Economics. (2009).
Oxon:
Routledge:.
Gaya Chicago
Port Economics.
.
Oxon:
Routledge:,
2009.
Text.
Gaya MLA
Port Economics.
.
Oxon:
Routledge:,
2009.
Text.
Gaya Turabian
Port Economics.
Oxon:
Routledge:,
2009.
Print.