Cita APA (7th ed.)

Dumortier, F., Rodrigues, P. R., & Roussarie, R. (1981). Germs of diffeormorphisms in the plane. Springer-Verlag.

Cita Chicago (17th ed.)

Dumortier, Freddy, Paulo R. Rodrigues, i Robert Roussarie. Germs of Diffeormorphisms in the Plane. Berlín: Springer-Verlag, 1981.

Cita MLA (9th ed.)

Dumortier, Freddy, et al. Germs of Diffeormorphisms in the Plane. Springer-Verlag, 1981.