Lefschetz, S. (1963). Differential equations: Geometric theory (2a. ed.). Interscience.
Chicago Style (17th ed.) CitationLefschetz, Solomon. Differential Equations: Geometric Theory. 2a. ed. New York: Interscience, 1963.
MLA (9th ed.) CitationLefschetz, Solomon. Differential Equations: Geometric Theory. 2a. ed. Interscience, 1963.