Villadsen, J. (1978). Solution of differential equation models. Prentice-Hall of India.
Dyfyniad Arddull ChicagoVilladsen, John. Solution of Differential Equation Models. N J: Prentice-Hall of India, 1978.
Dyfyniad MLAVilladsen, John. Solution of Differential Equation Models. Prentice-Hall of India, 1978.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.