Edwards, C. H., Penney, D. E., & Calvis, D. (2008). Elementary differential equations with boundary value problems (Sixth edition.). Pearson/Prentice Hall.
Chicago-referens (17:e uppl.)Edwards, C. Henry, David E. Penney, och David Calvis. Elementary Differential Equations with Boundary Value Problems. Sixth edition. Upper Saddle River, New Jersey: Pearson/Prentice Hall, 2008.
MLA-referens (9:e uppl.)Edwards, C. Henry, et al. Elementary Differential Equations with Boundary Value Problems. Sixth edition. Pearson/Prentice Hall, 2008.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.