Lefschetz, S. (1960). Differential equations: Geometric theory (2a. ed.). Interscience Publishers.
Chicago Style (17th ed.) CitationLefschetz, Solomon. Differential Equations: Geometric Theory. 2a. ed. Nueva York: Interscience Publishers, 1960.
MLA (9th ed.) CitationLefschetz, Solomon. Differential Equations: Geometric Theory. 2a. ed. Interscience Publishers, 1960.
Warning: These citations may not always be 100% accurate.