BRAND, L. (1966). Differential and difference equations. John Wiley.
Cita Chicago (17th ed.)BRAND, Louis. Differential and Difference Equations. New York: John Wiley, 1966.
Cita MLA (9th ed.)BRAND, Louis. Differential and Difference Equations. John Wiley, 1966.
Atenció: Aquestes cites poden no estar 100% correctes.