Cita APA (7a ed.)

Giacaglia, G. (1972). Perturbation methods in Non-linear systems. Springer.

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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