Kuczma, M., Choczewski, B., & Ger, R. (1990). Iterative functional equations. Cambridge University Press.
Cita Chicago (17th ed.)Kuczma, Marek, Bogdan Choczewski, i Roman Ger. Iterative Functional Equations. Cambridge ; New York: Cambridge University Press, 1990.
Cita MLA (8th ed.)Kuczma, Marek, et al. Iterative Functional Equations. Cambridge University Press, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.