Rogers, A. (1977). Migration, urbanization, resources, and development. International Institute for Applied Systems Analysis.
Dyfyniad Arddull ChicagoRogers, Andrei. Migration, Urbanization, Resources, and Development. Laxenburg, Austria: International Institute for Applied Systems Analysis, 1977.
Dyfyniad MLARogers, Andrei. Migration, Urbanization, Resources, and Development. International Institute for Applied Systems Analysis, 1977.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.