एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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