Παραπομπή APA

Brauer, F., & Nohel, J. A. (1968). Problems and solutions in ordinary differential equations. W A Benjamin.

Παραπομπή Chicago Style

Brauer, Fred, και John A. Nohel. Problems and Solutions in Ordinary Differential Equations. New York: W A Benjamin, 1968.

Παραπομπή MLA

Brauer, Fred, και John A. Nohel. Problems and Solutions in Ordinary Differential Equations. W A Benjamin, 1968.