Doll, J. (1968). Economics of agricultural productions etc. Irwin.
Chicago-čujuhus (17. p.)Doll, John. Economics of Agricultural Productions Etc. Illinois: Irwin, 1968.
MLA-čujuhus (9. p.)Doll, John. Economics of Agricultural Productions Etc. Irwin, 1968.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.