Isard, W., & Cumberland, J. H. (1961). Regional economic planning: Techniques of analysis for less developed areas. Paris: European Productivity Angency. Organization for European Economic Co-Operation.
Παραπομπή Chicago StyleIsard, Walter, and John H. Cumberland. Regional Economic Planning: Techniques of Analysis for Less Developed Areas. Paris: European Productivity Angency. Organization for European Economic Co-Operation, 1961.
Παραπομπή MLAIsard, Walter, and John H. Cumberland. Regional Economic Planning: Techniques of Analysis for Less Developed Areas. Paris: European Productivity Angency. Organization for European Economic Co-Operation, 1961.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.