Graybill, F. A. (1961). An introduction to linear statistical models. McGraw-Hill.
Dyfyniad Arddull ChicagoGraybill, Franklin A. An Introduction to Linear Statistical Models. New York: McGraw-Hill, 1961.
Dyfyniad MLAGraybill, Franklin A. An Introduction to Linear Statistical Models. McGraw-Hill, 1961.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.