Gask, H. (1968). Ordinary differential equations. MIT Press.
Cita Chicago (17th ed.)Gask, H. Ordinary Differential Equations. Cambridge, Mass.: MIT Press, 1968.
Cita MLA (8th ed.)Gask, H. Ordinary Differential Equations. MIT Press, 1968.
Atenció: Aquestes cites poden no estar 100% correctes.