APA (7th ed.) Citation

Kreider, D. L., Kuller, R. G., & Ostberg, D. R. (1968). Elementary of Differential Equations. Addison-Wisley Publishing Co., Inc..

Chicago Style (17th ed.) Citation

Kreider, Donald L., Robert G. Kuller, and Donald R. Ostberg. Elementary of Differential Equations. London: Addison-Wisley Publishing Co., Inc., 1968.

MLA (9th ed.) Citation

Kreider, Donald L., et al. Elementary of Differential Equations. Addison-Wisley Publishing Co., Inc., 1968.