Cita APA (7a ed.)

Edwards, C., & Penney, D. (1993). Elementry differential equations with boundary value problems (3a ed.). Prentice-Hall International.

Cita Chicago Style (17a ed.)

Edwards, C.H, y D.E Penney. Elementry Differential Equations with Boundary Value Problems. 3a ed. Englewood Cliffs: Prentice-Hall International, 1993.

Cita MLA (9a ed.)

Edwards, C.H, y D.E Penney. Elementry Differential Equations with Boundary Value Problems. 3a ed. Prentice-Hall International, 1993.