Grigg, D. (1980). Population growth and agrarian change: An historical perspective. Univ. Pr.
Chicago-čujuhus (17. p.)Grigg, David. Population Growth and Agrarian Change: An Historical Perspective. Cambridge: Univ. Pr, 1980.
MLA-čujuhus (9. p.)Grigg, David. Population Growth and Agrarian Change: An Historical Perspective. Univ. Pr, 1980.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.