TIERNEY, J. A. (1979). Differential equations. Allyn and Bacon.
Cita Chicago (17th ed.)TIERNEY, John A. Differential Equations. Boston: Allyn and Bacon, 1979.
Cita MLA (9th ed.)TIERNEY, John A. Differential Equations. Allyn and Bacon, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.