Πετράκος, Γ. (1995). The regional structure of Albania, Bulgaria and Greece: Implications for cross-border cooperation and development. Volos: University of Thessaly. Department of Planning and Regional Development.
Παραπομπή Chicago StyleΠετράκος, Γιώργος. The Regional Structure of Albania, Bulgaria and Greece: Implications for Cross-border Cooperation and Development. Volos: University of Thessaly. Department of Planning and Regional Development, 1995.
Παραπομπή MLAΠετράκος, Γιώργος. The Regional Structure of Albania, Bulgaria and Greece: Implications for Cross-border Cooperation and Development. Volos: University of Thessaly. Department of Planning and Regional Development, 1995.
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