Cita APA (7th ed.)

Lefschetz, S. (1960). Differential equations: Geometric theory (2a. ed.). Interscience Publishers.

Cita Chicago (17th ed.)

Lefschetz, Solomon. Differential Equations: Geometric Theory. 2a. ed. Nueva York: Interscience Publishers, 1960.

Cita MLA (9th ed.)

Lefschetz, Solomon. Differential Equations: Geometric Theory. 2a. ed. Interscience Publishers, 1960.