Sánchez, D. A. (1979). Ordinary differential equations and stability theory: An introduction (1a. ed.). Dover Publications Inc.
Chicago-referens (17:e uppl.)Sánchez, David A. Ordinary Differential Equations and Stability Theory: An Introduction. 1a. ed. Nueva York: Dover Publications Inc, 1979.
MLA-referens (9:e uppl.)Sánchez, David A. Ordinary Differential Equations and Stability Theory: An Introduction. 1a. ed. Dover Publications Inc, 1979.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.