Lefschetz, S. (1963). Differential equations: Geometric theory (2d ed.). New York: Interscience Publishers.
Čikaški stil citiranjaLefschetz, Solomon. Differential Equations: Geometric Theory. 2d ed. New York: Interscience Publishers, 1963.
MLA način citiranjaLefschetz, Solomon. Differential Equations: Geometric Theory. 2d ed. New York: Interscience Publishers, 1963.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.