KAY, R. W. M. P. A. D. (2020). Farm management. Mc Graw - Hill.
Chicago-čujuhus (17. p.)KAY, Ronald William M.Edwards Patricia A. Duffy. Farm Management. Mc Graw - Hill, 2020.
MLA-čujuhus (9. p.)KAY, Ronald William M.Edwards Patricia A. Duffy. Farm Management. Mc Graw - Hill, 2020.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.