Παραπομπή APA

Sanders, J., & Verhulst, F. (1985). Averaging methods in Non linear dynamic al systems. Springer-Verlag.

Παραπομπή Chicago Style

Sanders, J.A, και F. Verhulst. Averaging Methods in Non Linear Dynamic Al Systems. New York: Springer-Verlag, 1985.

Παραπομπή MLA

Sanders, J.A, και F. Verhulst. Averaging Methods in Non Linear Dynamic Al Systems. Springer-Verlag, 1985.