APA (7th ed.) Citation

LaSalle, J. P., & Lefschetz, S. (1961). Stability by Liapunov's direct method: With applications. Academic Press.

Chicago Style (17th ed.) Citation

LaSalle, Joseph P., and Solomon Lefschetz. Stability by Liapunov's Direct Method: With Applications. New York: Academic Press, 1961.

MLA (8th ed.) Citation

LaSalle, Joseph P., and Solomon Lefschetz. Stability by Liapunov's Direct Method: With Applications. Academic Press, 1961.