Παραπομπή APA

Arnold, V. I., Gusein-Zade, S. M., Varchenko, A. N., Porteous, I., & Reynolds, M. (1985). The classification of critical points, caustics and wave fronts. Boston: Birkhauser.

Παραπομπή Chicago Style

Arnold, V. I., S. M. Gusein-Zade, A. N. Varchenko, Ian Porteous, and Mark Reynolds. The Classification of Critical Points, Caustics and Wave Fronts. Boston: Birkhauser, 1985.

Παραπομπή MLA

Arnold, V. I., et al. The Classification of Critical Points, Caustics and Wave Fronts. Boston: Birkhauser, 1985.

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