Cita APA (7a ed.)
Georgi Zhelezov. Sustainable Development in Mountain Regions: Southeastern Europe. Springer.
Cita estilo Chicago (17a ed.)
Georgi Zhelezov. Sustainable Development in Mountain Regions: Southeastern Europe. Dordrecht, Holanda: Springer.
Cita MLA (9a ed.)
Georgi Zhelezov. Sustainable Development in Mountain Regions: Southeastern Europe. Springer.
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