Edwards, C. H., & Penney, D. E. (2008). Elementary differential equations (Sixth edition.). Pearson/Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Edwards, C. H., agus David E. Penney. Elementary Differential Equations. Sixth edition. Upper Saddle River, N.J: Pearson/Prentice Hall, 2008.
Lua MLA (8ú heag.)Edwards, C. H., agus David E. Penney. Elementary Differential Equations. Sixth edition. Pearson/Prentice Hall, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.