Spiegel, M. R. (1961). Statistics in SI (Schaums). McGraw Hill Book Co.
Dyfyniad Arddull ChicagoSpiegel, Murray R. Statistics in SI (Schaums). Singapore: McGraw Hill Book Co, 1961.
Dyfyniad MLASpiegel, Murray R. Statistics in SI (Schaums). McGraw Hill Book Co, 1961.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.