Bibliography
Text Book: [Olsen]
Russ Olsen.
Design Patterns in Ruby.
Addison-Wesley, 2007.
ISBN: 0321490452
[Booch]
Grady Booch, et al.
Object-Oriented Analysis and Design with Applications, 3rd Edition.
Addison-Wesley, 2007.
ISBN: 9780201895513
[Fields]
Jay Fields, Shane Harvie, Martin Fowler, & Kent Beck.
Refactoring: Ruby Edition.
Addison-Wesley, 2009.
ISBN: 0321603508
[Freeman]
Elisabeth Freeman, Eric Freeman, Bert Bates, & Kathy Sierra.
Head First Design Patterns.
O'Reilly, 2004.
ISBN: 0596007124