Παραπομπή σε μορφή APA (7η εκδ.)

Beals, M. (1989). Propagation and interaction of singularities in nonlinear hyperbolic problems. Birkhauser.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Beals, Michael. Propagation and Interaction of Singularities in Nonlinear Hyperbolic Problems. Boston: Birkhauser, 1989.

Παραπομπή σε μορφή MLA (8th εκδ.)

Beals, Michael. Propagation and Interaction of Singularities in Nonlinear Hyperbolic Problems. Birkhauser, 1989.