Hafkamp, W. A. (1984). Economic-environmental modeling in a national-regional system: An operational approach with multi-layer projection. North-Holland Sole distributors for the U.S.A. and Canada, Elsevier Science Pub. Co.
Citace podle Chicago (17th ed.)Hafkamp, Wilhelmus A. Economic-environmental Modeling in a National-regional System: An Operational Approach with Multi-layer Projection. Amsterdam, New York, New York, N.Y., U.S.A: North-Holland Sole distributors for the U.S.A. and Canada, Elsevier Science Pub. Co, 1984.
Citace podle MLA (9th ed.)Hafkamp, Wilhelmus A. Economic-environmental Modeling in a National-regional System: An Operational Approach with Multi-layer Projection. North-Holland Sole distributors for the U.S.A. and Canada, Elsevier Science Pub. Co, 1984.