APA
Dikau R., Saurer H., . (1999). GIS for earth surface systems: analysis and modelling of the natural environment. Berlin: Gebrüder Borntraeger.
Chicago
Dikau Richard, Saurer Helmut, . 1999. GIS for earth surface systems: analysis and modelling of the natural environment. Berlin: Gebrüder Borntraeger.
Harvard
Dikau R., Saurer H., . (1999). GIS for earth surface systems: analysis and modelling of the natural environment. Berlin: Gebrüder Borntraeger.
MLA
Dikau Richard, Saurer Helmut, . GIS for earth surface systems: analysis and modelling of the natural environment. Berlin: Gebrüder Borntraeger. 1999.