Cita APA (7th ed.)

Giacaglia, G. E. O. (1972). Perturbation methods in non-linear systems. Springer-Verlag.

Cita Chicago (17th ed.)

Giacaglia, G. E. O. Perturbation Methods in Non-linear Systems. Nueva York: Springer-Verlag, 1972.

Cita MLA (9th ed.)

Giacaglia, G. E. O. Perturbation Methods in Non-linear Systems. Springer-Verlag, 1972.