Fowler, M., Beck, K., Brant, J., Opdyke, W., & Roberts, D. (1999). Refactoring: Improving the design of existing code. Reading, Massachusetts: Addison-Wesley.

Fowler, Martin, Kent Beck, John Brant, William Opdyke, and Don Roberts. Refactoring: Improving the Design of Existing Code. Reading, Massachusetts: Addison-Wesley, 1999.

Fowler, Martin, et al. Refactoring: Improving the Design of Existing Code. Reading, Massachusetts: Addison-Wesley, 1999.