APA (7th ed.) Citation

Toader, S., Rassias, T. M., & Toader, G. A Gauss type functional equation. Wiley.

Chicago Style (17th ed.) Citation

Toader, Silvia, Themistocles M. Rassias, and Gheorghe Toader. A Gauss Type Functional Equation. Wiley.

MLA (9th ed.) Citation

Toader, Silvia, et al. A Gauss Type Functional Equation. Wiley.