Παραπομπή σε μορφή APA (7η εκδ.)

Celia, M. A., & Gray, W. G. (1992). Numerical methods for differential equations: Fundamental concepts for scientific and engineering applications. Prentice-Hall.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Celia, Michael Anthony, και William Guerin Gray. Numerical Methods for Differential Equations: Fundamental Concepts for Scientific and Engineering Applications. Englewood Cliffs, N.J.: Prentice-Hall, 1992.

Παραπομπή σε μορφή MLA (9th εκδ.)

Celia, Michael Anthony, και William Guerin Gray. Numerical Methods for Differential Equations: Fundamental Concepts for Scientific and Engineering Applications. Prentice-Hall, 1992.