- The Ruby Way, Second Edition: Solutions and Techniques in Ruby Programming (2nd Edition) (Addison-We by Hal Fulton
- The Rails Way (Addison-Wesley Professional Ruby Series) by Obie Fernandez
- Programming Ruby: The Pragmatic Programmers’ Guide, Second Edition by Dave Thomas
- Ruby Phrasebook (Developer’s Library) by Jason D. Clinton
- Ruby Best Practices by Gregory Brown
- The RSpec Book: Behaviour Driven Development with RSpec, Cucumber, and Friends by David Chelimsky