Παραπομπή σε μορφή APA (7η εκδ.)

Petryshyn, W. V. (1993). Approximation-solvability of nonlinear functional and differential equations. M. Dekker.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Petryshyn, Wolodymyr V. Approximation-solvability of Nonlinear Functional and Differential Equations. New York: M. Dekker, 1993.

Παραπομπή σε μορφή MLA (9th εκδ.)

Petryshyn, Wolodymyr V. Approximation-solvability of Nonlinear Functional and Differential Equations. M. Dekker, 1993.