ebrary, Inc, Batabyal, A. A., & Nijkamp, P. (2011). Research tools in natural resource and environmental economics. World Scientific.
Chicago-čujuhus (17. p.)ebrary, Inc, Amitrajeet A. Batabyal, juo Peter Nijkamp. Research Tools in Natural Resource and Environmental Economics. Hackensack, N.J.: World Scientific, 2011.
MLA-čujuhus (9. p.)ebrary, Inc, et al. Research Tools in Natural Resource and Environmental Economics. World Scientific, 2011.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.