Spiegel, M. (1961). Theory and problems of statistics. Mc Graw Hills Company.
Dyfyniad Arddull ChicagoSpiegel, Murray. Theory and Problems of Statistics. Sydney: Mc Graw Hills Company, 1961.
Dyfyniad MLASpiegel, Murray. Theory and Problems of Statistics. Mc Graw Hills Company, 1961.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.