Hartl, M., & Sivers, D. [ca. 2022]. RUBY ON RAILS TUTORIAL : learn web development with rails. In Addison-Wesley professional Ruby series (Seventh edition) [Cd]. [S.l.]: ADDISON-WESLEY.

HARTL, Michael und SIVERS, Derek, 2022. RUBY ON RAILS TUTORIAL : learn web development with rails. Seventh edition. [S.l.]: ADDISON-WESLEY. ISBN 9780138049973.

Hartl, M., und D. Sivers. „RUBY ON RAILS TUTORIAL : learn web development with rails“. Addison-Wesley professional Ruby series, Seventh edition, cd, ADDISON-WESLEY, 2022.

Hartl, Michael/Sivers, Derek: RUBY ON RAILS TUTORIAL : learn web development with rails, Seventh edition. Aufl. [S.l.] 2022.

Hartl, M. und Sivers, D. (2022), RUBY ON RAILS TUTORIAL : learn web development with rails, Addison-Wesley professional Ruby series, Seventh edition., Bd. , ADDISON-WESLEY, [S.l.].