APA
Euroconstruct, Graf H., . (1989). Medium-term assessment of construction activities in Europe. St. Gallen,Switzerland: Euroconstruct.
Chicago
Euroconstruct, Graf H.G, . 1989. Medium-term assessment of construction activities in Europe. St. Gallen,Switzerland: Euroconstruct.
Harvard
Euroconstruct, Graf H., . (1989). Medium-term assessment of construction activities in Europe. St. Gallen,Switzerland: Euroconstruct.
MLA
Euroconstruct, Graf H.G, . Medium-term assessment of construction activities in Europe. St. Gallen,Switzerland: Euroconstruct. 1989.