Παραπομπή σε μορφή APA (7η εκδ.)

Edwards, C. H., & Penney, D. Ε. (1989). Elementary differential equations with boundary value problems (2nd ed.). Prentice Hall.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Edwards, C. Henry, και David Ε Penney. Elementary Differential Equations with Boundary Value Problems. 2nd ed. Englewood Cliffs: Prentice Hall, 1989.

Παραπομπή σε μορφή MLA (8th εκδ.)

Edwards, C. Henry, και David Ε Penney. Elementary Differential Equations with Boundary Value Problems. 2nd ed. Prentice Hall, 1989.