SAMPATH S. (2005). SAMPLING THEORY AND METHODS (2ND.). NAROSA PUBLISHING HOUSE.
Dyfyniad Arddull ChicagoSAMPATH S. SAMPLING THEORY AND METHODS. 2ND. NEW DELHI: NAROSA PUBLISHING HOUSE, 2005.
Dyfyniad MLASAMPATH S. SAMPLING THEORY AND METHODS. 2ND. NAROSA PUBLISHING HOUSE, 2005.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.