APA način citiranja (7. izdanje)

(2015). one step ahead: Towards environmental sustainability. united nation.

Čikaški stil citiranja (17. izdanje)

One Step Ahead: Towards Environmental Sustainability. cairo: united nation, 2015.

MLA način citiranja (9. izdanje)

One Step Ahead: Towards Environmental Sustainability. united nation, 2015.

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