TOP #1

Design Patterns: Elements of Reusable Object-Oriented Software

Erich Gamma, Richard Helm, Ralph Johnson, John Vlissides
TOP #2

Head First Design Patterns: A Brain-Friendly Guide

Eric Freeman, Bert Bates, Kathy Sierra, Elisabeth Robson
TOP #5
TOP #6

Refactoring: Improving the Design of Existing Code

Martin Fowler, Kent Beck, John Brant, William Opdyke, Don Roberts
TOP #8

Head First Object-Oriented Analysis and Design

Brett D. McLaughlin, Gary Pollice, Dave West
TOP #9
TOP #11
TOP #12
TOP #15