Forsyth, A. R. (1961). A treatise on differential equations (6th ed.). Macmillan.
Dyfyniad Arddull ChicagoForsyth, Andrew Russell. A Treatise on Differential Equations. 6th ed. London: Macmillan, 1961.
Dyfyniad MLAForsyth, Andrew Russell. A Treatise on Differential Equations. 6th ed. Macmillan, 1961.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.