Davis, H. C. (1995). Demographic projection techniques for regions and smaller areas: A primer. UBC Press.
Dyfyniad Arddull ChicagoDavis, H. Craig. Demographic Projection Techniques for Regions and Smaller Areas: A Primer. Vancouver: UBC Press, 1995.
Dyfyniad MLADavis, H. Craig. Demographic Projection Techniques for Regions and Smaller Areas: A Primer. UBC Press, 1995.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.