Παραπομπή APA

Verhulst, F. (1990). Nonlinear differential equations and dynamical systems. Springer-Verlag.

Παραπομπή Chicago Style

Verhulst, Ferdinand. Nonlinear Differential Equations and Dynamical Systems. New York: Springer-Verlag, 1990.

Παραπομπή MLA

Verhulst, Ferdinand. Nonlinear Differential Equations and Dynamical Systems. Springer-Verlag, 1990.