APA
Cartwright M L Ed, Coddington E A Ed, Debaggis H F Ed, Lefschetz S Ed & Levinson N Ed. (1952). Contributtions to the theory of nonlinear oscillations. : .
Chicago
Cartwright M L Ed, Coddington E A Ed, Debaggis H F Ed, Lefschetz S Ed and Levinson N Ed. 1952. Contributtions to the theory of nonlinear oscillations. : .
Harvard
Cartwright M L Ed, Coddington E A Ed, Debaggis H F Ed, Lefschetz S Ed and Levinson N Ed. (1952). Contributtions to the theory of nonlinear oscillations. : .
MLA
Cartwright M L Ed, Coddington E A Ed, Debaggis H F Ed, Lefschetz S Ed and Levinson N Ed. Contributtions to the theory of nonlinear oscillations. : . 1952.
