Não informado. (1964). Geographia Polonica. Polish Academy of Sciences, Institute of Geography and Spatial Organization.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Geographia Polonica. Warsaw: Polish Academy of Sciences, Institute of Geography and Spatial Organization, 1964.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Geographia Polonica. Polish Academy of Sciences, Institute of Geography and Spatial Organization, 1964.
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