DIXON, D. Encyclopedia Of Science: The Earth Our Planet Its Land, Sea, and Air. Macmillan Publishing Company.
Čikaški stil citiranja (17. izdanje)DIXON, Dougal. Encyclopedia Of Science: The Earth Our Planet Its Land, Sea, and Air. Macmillan Publishing Company.
MLA način citiranja (8. izdanje)DIXON, Dougal. Encyclopedia Of Science: The Earth Our Planet Its Land, Sea, and Air. Macmillan Publishing Company.
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