Cita APA (7a ed.)

Hartl, M. (2016). Ruby on RailsTM Tutorial: Learn Web Development with Rails, Fourth Edition (4th edition.). Addison-Wesley Professional.

Cita Chicago Style (17a ed.)

Hartl, Michael. Ruby on RailsTM Tutorial: Learn Web Development with Rails, Fourth Edition. 4th edition. Addison-Wesley Professional, 2016.

Cita MLA (9a ed.)

Hartl, Michael. Ruby on RailsTM Tutorial: Learn Web Development with Rails, Fourth Edition. 4th edition. Addison-Wesley Professional, 2016.