Shaw, Z. [ca. 2014]. Learn Ruby the Hard Way: : A Simple and Idiomatic Introduction to the Imaginative World of Computational Thinking with Code, Third Edition (1 st edition) [Cd]. [Erscheinungsort nicht ermittelbar]: Addison-Wesley Professional.

SHAW, Zed, 2014. Learn Ruby the Hard Way: : A Simple and Idiomatic Introduction to the Imaginative World of Computational Thinking with Code, Third Edition. 1 st edition. [Erscheinungsort nicht ermittelbar]: Addison-Wesley Professional. ISBN 9780133135633.

Shaw, Z. Learn Ruby the Hard Way: : A Simple and Idiomatic Introduction to the Imaginative World of Computational Thinking with Code, Third Edition. 1 st edition, cd, Addison-Wesley Professional, 2014.

Shaw, Zed: Learn Ruby the Hard Way: : A Simple and Idiomatic Introduction to the Imaginative World of Computational Thinking with Code, Third Edition, 1 st edition. Aufl. [Erscheinungsort nicht ermittelbar] 2014.

Shaw, Z. (2014), Learn Ruby the Hard Way: : A Simple and Idiomatic Introduction to the Imaginative World of Computational Thinking with Code, Third Edition, 1 st edition., Bd. , Addison-Wesley Professional, [Erscheinungsort nicht ermittelbar].