Παραπομπή σε μορφή APA (7η εκδ.)

Douglas, J. J. (1974). Collocation methods for parabolic equations in a single space variable, based on C¹ piecewise-polynomial spaces. Springer-Verlag.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Douglas, Jim Jr. Collocation Methods for Parabolic Equations in a Single Space Variable, Based on C¹ Piecewise-polynomial Spaces. Berlin ; New York: Springer-Verlag, 1974.

Παραπομπή σε μορφή MLA (8th εκδ.)

Douglas, Jim Jr. Collocation Methods for Parabolic Equations in a Single Space Variable, Based on C¹ Piecewise-polynomial Spaces. Springer-Verlag, 1974.