Simmons, G. F. (1974). Differential equations (1st.). Tata Mac Graw Hill.
Dyfyniad Arddull ChicagoSimmons, George F. Differential Equations. 1st. New Delhi: Tata Mac Graw Hill, 1974.
Dyfyniad MLASimmons, George F. Differential Equations. 1st. Tata Mac Graw Hill, 1974.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.