Dyfyniad APA

Edwards, C. H., & Penney, D. E. (2008). Elementary differential equations (Sixth edition.). Pearson/Prentice Hall.

Dyfyniad Arddull Chicago

Edwards, C. H., and David E. Penney. Elementary Differential Equations. Sixth edition. Upper Saddle River, N.J: Pearson/Prentice Hall, 2008.

Dyfyniad MLA

Edwards, C. H., and David E. Penney. Elementary Differential Equations. Sixth edition. Pearson/Prentice Hall, 2008.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.