de Blij, H. J. (1971). Geography regions and concepts. John Wiley and Sons.
Chicago Style (17th ed.) Citationde Blij, Harm J. Geography Regions and Concepts. John Wiley and Sons, 1971.
MLA (9th ed.) Citationde Blij, Harm J. Geography Regions and Concepts. John Wiley and Sons, 1971.
Warning: These citations may not always be 100% accurate.