Waltman, P. E. (1974). Deterministic threshold models in the theory of epidemics. Springer-Verlag.
Dyfyniad Arddull ChicagoWaltman, Paul E. Deterministic Threshold Models in the Theory of Epidemics. Berlin, New York: Springer-Verlag, 1974.
Dyfyniad MLAWaltman, Paul E. Deterministic Threshold Models in the Theory of Epidemics. Springer-Verlag, 1974.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.