APA (7th ed.) Citation

Etgen, G. J., & Morris, W. L. (1977). An Introduction to ordinary differential equations: With difference equations, numerical, methods and applications. Harper & Row.

Chicago Style (17th ed.) Citation

Etgen, Garret J., and William L. Morris. An Introduction to Ordinary Differential Equations: With Difference Equations, Numerical, Methods and Applications. New York [etc.]: Harper & Row, 1977.

MLA (9th ed.) Citation

Etgen, Garret J., and William L. Morris. An Introduction to Ordinary Differential Equations: With Difference Equations, Numerical, Methods and Applications. Harper & Row, 1977.