APA

Ross Shepley L, Ross S. L., . (1989). Introduction to ordinary differential equations. New York: Wiley.

Chicago

Ross Shepley L, Ross Shepley L, . 1989. Introduction to ordinary differential equations. New York: Wiley.

Harvard

Ross Shepley L, Ross S. L., . (1989). Introduction to ordinary differential equations. New York: Wiley.

MLA

Ross Shepley L, Ross Shepley L, . Introduction to ordinary differential equations. New York: Wiley. 1989.