Citazione APA

SpringerLink (Online service) & Zhelezov, G. (2011). Sustainable development in mountain regions: Southeastern Europe. Springer Science+Business.

Stile di citazione Chicago

SpringerLink (Online service) e Georgi Zhelezov. Sustainable Development in Mountain Regions: Southeastern Europe. Dordrecht: Springer Science+Business, 2011.

Citazione MLA

SpringerLink (Online service) e Georgi Zhelezov. Sustainable Development in Mountain Regions: Southeastern Europe. Springer Science+Business, 2011.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.