APA (7th ed.) Citation

Shaw, Z. A. (2015). Learn Ruby the hard way: A simple and idiomatic introduction to the imaginative world of computational thinking with code (3. ed.). Pearson, Addison-Wesley.

Chicago Style (17th ed.) Citation

Shaw, Zed A. Learn Ruby the Hard Way: A Simple and Idiomatic Introduction to the Imaginative World of Computational Thinking with Code. 3. ed. Upper Saddle River, NJ: Pearson, Addison-Wesley, 2015.

MLA (9th ed.) Citation

Shaw, Zed A. Learn Ruby the Hard Way: A Simple and Idiomatic Introduction to the Imaginative World of Computational Thinking with Code. 3. ed. Pearson, Addison-Wesley, 2015.