APA (7th ed.) Citation
Keyfitz, B., & Shearer, M. (1990). Nonlinear Evolution Equation that Change Type. Springer Verlag.
Chicago Style (17th ed.) Citation
Keyfitz, B.L, and M. Shearer. Nonlinear Evolution Equation That Change Type. New York: Springer Verlag, 1990.
MLA (9th ed.) Citation
Keyfitz, B.L, and M. Shearer. Nonlinear Evolution Equation That Change Type. Springer Verlag, 1990.
Warning: These citations may not always be 100% accurate.