APA (7th ed.) Citation

Hyers, D. H., Isac, G., & Rassias, T. M. (1998). Stability of functional equations in several variables. Birkhäuser.

Chicago Style (17th ed.) Citation

Hyers, Donald H., George Isac, and Themistocles M. Rassias. Stability of Functional Equations in Several Variables. Boston [u.a.]: Birkhäuser, 1998.

MLA (9th ed.) Citation

Hyers, Donald H., et al. Stability of Functional Equations in Several Variables. Birkhäuser, 1998.