NIJKAMP, P. (1976). Environmental economics. Martinus Nijhoff Social Sciences Division.
Chicago-čujuhus (17. p.)NIJKAMP, Peter. Environmental Economics. Leiden: Martinus Nijhoff Social Sciences Division, 1976.
MLA-čujuhus (9. p.)NIJKAMP, Peter. Environmental Economics. Martinus Nijhoff Social Sciences Division, 1976.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.