U.S. Environmental Protection Agency EPA. Terms of Environment, Glossary, Abbreviations and Acronyms.
Čikaški stil citiranja (17. izdanje)U.S. Environmental Protection Agency EPA. Terms of Environment, Glossary, Abbreviations and Acronyms.
MLA način citiranja (9. izdanje)U.S. Environmental Protection Agency EPA. Terms of Environment, Glossary, Abbreviations and Acronyms.
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