Παραπομπή APA

Verhulst, F. (1989). Non-linear differential equations and dynamical systems. Springer- Verlag.

Παραπομπή Chicago Style

Verhulst, Ferdinard. Non-linear Differential Equations and Dynamical Systems. New York: Springer- Verlag, 1989.

Παραπομπή MLA

Verhulst, Ferdinard. Non-linear Differential Equations and Dynamical Systems. Springer- Verlag, 1989.