Ahsan, Z. (2004). Differential Equations and Their Applications (2nd ed.). PHI Learning.
Cita Chicago (17th ed.)Ahsan, Zafar. Differential Equations and Their Applications. 2nd ed. New Delhi: PHI Learning, 2004.
Cita MLA (9th ed.)Ahsan, Zafar. Differential Equations and Their Applications. 2nd ed. PHI Learning, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.