APA (7th ed.) Citation

Bluman, G. W., & Kumei, S. (1989). Symmetries and differential equations. Springer.

Chicago Style (17th ed.) Citation

Bluman, George W., and Sukeyuki Kumei. Symmetries and Differential Equations. New York u.a: Springer, 1989.

MLA (9th ed.) Citation

Bluman, George W., and Sukeyuki Kumei. Symmetries and Differential Equations. Springer, 1989.