APA-viite

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

Chicago-tyylinen lähdeviittaus

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

MLA-viite

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