APA (7th ed.) Citation

Small, C. G. (2007). Functional equations and how to solve them. Springer.

Chicago Style (17th ed.) Citation

Small, Christopher G. Functional Equations and How to Solve Them. New York, New York: Springer, 2007.

MLA (9th ed.) Citation

Small, Christopher G. Functional Equations and How to Solve Them. Springer, 2007.