Forsyth, A. (1959). Theory of differential equations. Dover Publications.
Cita Chicago (17th ed.)Forsyth, A. Theory of Differential Equations. New York: Dover Publications, 1959.
Cita MLA (9th ed.)Forsyth, A. Theory of Differential Equations. Dover Publications, 1959.
Atenció: Aquestes cites poden no estar 100% correctes.