Ruby Programming

Pragmatic Bookshelf

Programming Ruby 3.3: The Pragmatic Programmers Guide

O'Reilly Media

The Ruby Programming Language: Everything You Need to Know

Ruby Programming for Beginners: An Introduction to Learning Ruby Programming with Tutorials and Hands-On Examples (English Edition)

HIPSTERCELL

Ruby Programming Guide                          

Programming Ruby 1.9 & 2.0: The Pragmatic Programmers' Guide (The Facets of Ruby) by Thomas, Dave, Hunt, Andy, Fowler, Chad (2013) Paperback

MODERN RUBY PROGRAMMING: From Fundamentals to Advanced MetaProgramming (English Edition)

Programming with Ruby: Modern Techniques and Best Practices (English Edition)

Ruby Programming (English Edition)              

CompreQuest Books

Ruby Programming: Dynamic, Object-Oriented Language for Simplicity and Productivity (Mastering Programming Languages Series) (English Edition)

Ruby Programming Language: Comprehensive Ruby Programming Language Guidebook for Beginners and Advanced Learners (English Edition)