Dathe, D., & Schmid, G. (2000). Determinants of Business and Personal Services: Evidence from West-German Regions.
Lua i Stíl Chicago (17ú heag.)Dathe, Dietmar, agus Günther Schmid. Determinants of Business and Personal Services: Evidence from West-German Regions. Berlin, 2000.
Lua MLA (8ú heag.)Dathe, Dietmar, agus Günther Schmid. Determinants of Business and Personal Services: Evidence from West-German Regions. 2000.
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