MLA

Kuczma, Marek, Attila Gilányi, and Attila Gilányi. An Introduction to the Theory of Functional Equations and Inequalities. Birkhäuser Basel, 2009.

APA

Kuczma, M., Gilányi, A., & Gilányi, A. (2009). An Introduction to the Theory of Functional Equations and Inequalities. Birkhäuser Basel.

Chicago

Kuczma, Marek, Attila Gilányi, and Attila Gilányi. An Introduction to the Theory of Functional Equations and Inequalities. : Birkhäuser Basel, 2009.