Helmsing, A. H. J. (1999). Flexible specialisation, clusters and industrial districs 'second' and 'third generation' regional policies. Institute of Social Studies.
Citace podle Chicago (17th ed.)Helmsing, A. H. J. Flexible Specialisation, Clusters and Industrial Districs 'Second' and 'Third Generation' Regional Policies. The Hague: Institute of Social Studies, 1999.
Citace podle MLA (9th ed.)Helmsing, A. H. J. Flexible Specialisation, Clusters and Industrial Districs 'Second' and 'Third Generation' Regional Policies. Institute of Social Studies, 1999.
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