Παραπομπή APA

Simmons, G. F. (1991). Differential equations: With applications and historical notes (2 edition.). McGraw-Hill Book Co. Inc.

Παραπομπή Chicago Style

Simmons, George F. Differential Equations: With Applications and Historical Notes. 2 edition. New York: McGraw-Hill Book Co. Inc, 1991.

Παραπομπή MLA

Simmons, George F. Differential Equations: With Applications and Historical Notes. 2 edition. McGraw-Hill Book Co. Inc, 1991.