CHATFIELD CHRISTOPHER. (1978). STATISTICS FOR TECHONOLOGY (2ND.). CHAPMAN & HALL.
Dyfyniad Arddull ChicagoCHATFIELD CHRISTOPHER. STATISTICS FOR TECHONOLOGY. 2ND. LONDON: CHAPMAN & HALL, 1978.
Dyfyniad MLACHATFIELD CHRISTOPHER. STATISTICS FOR TECHONOLOGY. 2ND. CHAPMAN & HALL, 1978.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.