APA (7 वां संस्करण) प्रशस्ति पत्र

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

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

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

एमएलए (8वां संस्करण) प्रशस्ति पत्र

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