Grigg, D. (1980). Population growth and agrarian change: An historical perspective. Univ. Pr.
Cita Chicago (17th ed.)Grigg, David. Population Growth and Agrarian Change: An Historical Perspective. Cambridge: Univ. Pr, 1980.
Cita MLA (9th ed.)Grigg, David. Population Growth and Agrarian Change: An Historical Perspective. Univ. Pr, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.