Lefschetz, S. (1965). Stability of nonlinear control systems. Academic Press.
Lua i Stíl Chicago (17ú heag.)Lefschetz, Solomon. Stability of Nonlinear Control Systems. New York: Academic Press, 1965.
Lua MLA (8ú heag.)Lefschetz, Solomon. Stability of Nonlinear Control Systems. Academic Press, 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.