Journal of Agricultural Extension | Agricultural Extension Society of Nigeria. Cambridge University Press.
Chicago-čujuhus (17. p.)Journal of Agricultural Extension | Agricultural Extension Society of Nigeria. Cambridge University Press.
MLA-čujuhus (9. p.)Journal of Agricultural Extension | Agricultural Extension Society of Nigeria. Cambridge University Press.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.