Grigg, D. (1992). An Introduction to agricultural geography. Routledge.
Chicago-čujuhus (17. p.)Grigg, David. An Introduction to Agricultural Geography. London: Routledge, 1992.
MLA-čujuhus (9. p.)Grigg, David. An Introduction to Agricultural Geography. Routledge, 1992.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.