Cita APA (7a ed.)

SpringerLink (Online service) & Reyn, J. (2007). Phase portraits of planar quadratic systems. Springer Science+Business Media, LLC.

Cita Chicago Style (17a ed.)

SpringerLink (Online service) y John Reyn. Phase Portraits of Planar Quadratic Systems. Norwell: Springer Science+Business Media, LLC, 2007.

Cita MLA (8a ed.)

SpringerLink (Online service) y John Reyn. Phase Portraits of Planar Quadratic Systems. Springer Science+Business Media, LLC, 2007.