STOFFERS, J. (1987). Regional and rural development planning series Nr.X: Pengelolaan dan analisa data. F.Geografi-UGM.
Dyfyniad Arddull ChicagoSTOFFERS, J.W. Regional and Rural Development Planning Series Nr.X: Pengelolaan Dan Analisa Data. Yogyakarta: F.Geografi-UGM, 1987.
Dyfyniad MLASTOFFERS, J.W. Regional and Rural Development Planning Series Nr.X: Pengelolaan Dan Analisa Data. F.Geografi-UGM, 1987.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.