Ruby (Computer program language)

Programming Cocoa with Ruby: Create Compelling Mac Apps Using Rubycocoa

Learn to Program

Ruby in Practice

Programming Ruby 1.9: The Pragmatic Programmer's Guide

Rails Pocket Reference: A Quick Guide to Rails

The Rails Way

Metaprogramming Ruby: Program Like the Ruby Pros

Ruby Best Practices: Increase Your Productivity - Write Better Code

Troubleshooting Ruby Processes: Leveraging System Tools when the Usual Ruby Tricks Stop Working (Digital Short Cut)

Well-Grounded Rubyist

Rails Cookbook: Recipes for Rapid Web Development with Ruby

Programming Ruby 1.9: The Pragmatic Programmer's Guide

Programming Ruby: The Pragmatic Programmers' Guide (Pragmatic Programmers Series)

Agile Data Science 2.0: Building Full-Stack Data Analytics Applications with Spark

Ruby by Example: Concepts and Code

Refactoring in Ruby

Ruby Cookbook: Recipes for Object-Oriented Scripting

The Book of Ruby: A Hands-On Guide for the Adventurous

Ruby on Rails Power!: The Comprehensive Guide

Eloquent Ruby

Ruby: Visual QuickStart Guide

The Ruby Way: Solutions and Techniques in Ruby Programming

Practical Object-Oriented Design in Ruby: An Agile Primer

The Book of Ruby: A Hands-On Guide for the Adventurous