APA Edition Citation

Lefschetz.S. (1950). Contributiona to the Theory of Nonlinear Ocillations (1950.). Princeton University Press.

Chicago Edition Citation

Lefschetz.S. Contributiona to the Theory of Nonlinear Ocillations. 1950. Princeton: Princeton University Press, 1950.

MLA Edition Citation

Lefschetz.S. Contributiona to the Theory of Nonlinear Ocillations. 1950. Princeton University Press, 1950.

Warning: These citations may not always be 100% accurate.