Working Effectively with Legacy Code (Robert C. Martin Series)

Refactoring: Improving the Design of Existing Code (Addison-Wesley Signature Series (Fowler))

Clean Architecture: A Craftsman's Guide to Software Structure and Design (Robert C. Martin Series)

Clean Code: A Handbook of Agile Software Craftsmanship (Robert C. Martin Series)

The Clean Coder: A Code of Conduct for Professional Programmers (Robert C. Martin Series)

Design Patterns: Elements of Reusable Object-Oriented Software (Addison-Wesley Professional Computing Series)

The Pragmatic Programmer: From Journeyman to Master

Domain-Driven Design: Tackling Complexity in the Heart of Software

Code Complete (Developer Best Practices)

Patterns of Enterprise Application Architecture: Pattern Enterpr Applica Arch (Addison-Wesley Signature Series (Fowler))

Refactoring: Improving the Design of Existing Code (Addison-Wesley Object Technology Series)