APA
Gren I., Sylven Magnus, Groth Klaus Henning & Beijer International Institute Of Ecological Econo. (1995). Economic values of Danube floodplains. Stockholm: BEIJER.
Chicago
Gren Ing-Marie, Sylven Magnus, Groth Klaus Henning and Beijer International Institute Of Ecological Econo. 1995. Economic values of Danube floodplains. Stockholm: BEIJER.
Harvard
Gren I., Sylven Magnus, Groth Klaus Henning and Beijer International Institute Of Ecological Econo. (1995). Economic values of Danube floodplains. Stockholm: BEIJER.
MLA
Gren Ing-Marie, Sylven Magnus, Groth Klaus Henning and Beijer International Institute Of Ecological Econo. Economic values of Danube floodplains. Stockholm: BEIJER. 1995.