Παραπομπή APA

Betz, H., & ...[et al.]. Differential equations with applications (2nd ed.). Harper international edition, Harper and row publisher.

Παραπομπή Chicago Style

Betz, Herman, και ...[et al.]. Differential Equations with Applications. 2nd ed. New York: Harper international edition, Harper and row publisher.

Παραπομπή MLA

Betz, Herman, και ...[et al.]. Differential Equations with Applications. 2nd ed. Harper international edition, Harper and row publisher.