Cita APA (7a ed.)

Lefschetz, S. (1950). Contributions to the theory of nonlinear oscillations. Princeton University Press.

Cita Chicago Style (17a ed.)

Lefschetz, S. Contributions to the Theory of Nonlinear Oscillations. Princeton: Princeton University Press, 1950.

Cita MLA (9a ed.)

Lefschetz, S. Contributions to the Theory of Nonlinear Oscillations. Princeton University Press, 1950.