Eichhorn, W. (1978). Theory and application of economic indices: Proceedings of an international symposium held at the University of Karlaruhe, April-June 1976. Physica-Verlag.
Lua i Stíl Chicago (17ú heag.)Eichhorn, Wolfgang. Theory and Application of Economic Indices: Proceedings of an International Symposium Held at the University of Karlaruhe, April-June 1976. Wurburg: Physica-Verlag, 1978.
Lua MLA (9ú heag.)Eichhorn, Wolfgang. Theory and Application of Economic Indices: Proceedings of an International Symposium Held at the University of Karlaruhe, April-June 1976. Physica-Verlag, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.