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.
Lua i Stíl Chicago (17ú heag.)Research Institute of Agricultural Economics, Committee on Agricultural Economics, Hungarian Academy of Sciences, Jozsef Popp, Szabo Gabor, agus Barnafi Laszlo. Studies in Agricultural Economics 2009: No 110. 2009.
Lua MLA (9ú heag.)Research Institute of Agricultural Economics, et al. Studies in Agricultural Economics 2009: No 110. 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.