Ruby Programming

Pragmatic Bookshelf

Programming Ruby 3.3: The Pragmatic Programmers Guide

Dark Neon

The Little Book Of Ruby Programming: Learn To Program Ruby For Beginners

O'Reilly

The Ruby Programming Language: Everything You Need to Know

Packt Publishing

Polished Ruby Programming: Build better software with more intuitive, maintainable, scalable, and high-performance Ruby code

Independently published

Black Hat Ruby: Offensive Ruby programming for Hackers and Pentesters

Brand: Pragmatic Bookshelf

Metaprogramming Ruby: Program Like the Ruby Pros

Independently published

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

Pragmatic Bookshelf

Programming Ruby: The Pragmatic Programmer's Guide: xxxii

Addison-Wesley Professional

Eloquent Ruby [Lingua inglese]                  

Ruby For Beginners: Your Guide To Easily Learn Ruby Programming in 7 days (Programming Languages Book 9) (English Edition)