Research Institute of Agricultural Economics, Committee on Agricultural Economics, Hungarian Academy of Sciences, Popp, J., Gabor, S., & Laszlo, B. (2009). Studies in agricultural economics 2009: No 110.
Chicago-referens (17:e uppl.)Research Institute of Agricultural Economics, Committee on Agricultural Economics, Hungarian Academy of Sciences, Jozsef Popp, Szabo Gabor, och Barnafi Laszlo. Studies in Agricultural Economics 2009: No 110. 2009.
MLA-referens (9:e uppl.)Research Institute of Agricultural Economics, et al. Studies in Agricultural Economics 2009: No 110. 2009.
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