APA
Gottschalk L., Nordberg L., . (1977). Mathematical modelling of groundwater level response in different geological environments. Stockholm: Sveriges geologiska undersökning. Serie C nr 728.
Chicago
Gottschalk L, Nordberg L, . 1977. Mathematical modelling of groundwater level response in different geological environments. Stockholm: Sveriges geologiska undersökning. Serie C nr 728.
Harvard
Gottschalk L., Nordberg L., . (1977). Mathematical modelling of groundwater level response in different geological environments. Stockholm: Sveriges geologiska undersökning. Serie C nr 728.
MLA
Gottschalk L, Nordberg L, . Mathematical modelling of groundwater level response in different geological environments. Stockholm: Sveriges geologiska undersökning. Serie C nr 728. 1977.