APA način citiranja (7. izdanje)
Chouhan,B.S. Environmental studies / Chouhan,B.S: University Science Press.
Čikaški stil citiranja (17. izdanje)
Chouhan,B.S. Environmental Studies / Chouhan,B.S: University Science Press.
MLA način citiranja (9. izdanje)
Chouhan,B.S. Environmental Studies / Chouhan,B.S: University Science Press.
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