(1993). Oxford illustrated encyclopedia: Vol.2 - The nature world. New York: Oxford Univ. Press.
Čikaški stil citiranjaOxford Illustrated Encyclopedia: Vol.2 - The Nature World. New York: Oxford Univ. Press, 1993.
MLA način citiranjaOxford Illustrated Encyclopedia: Vol.2 - The Nature World. New York: Oxford Univ. Press, 1993.
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