Gaya APA
Geography:Annual Editions. (2008).
New York:
[s.n.].
Gaya Chicago
Geography:Annual Editions.
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New York:
[s.n.],
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Text.
Gaya MLA
Geography:Annual Editions.
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New York:
[s.n.],
2008.
Text.
Gaya Turabian
Geography:Annual Editions.
New York:
[s.n.],
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Print.