Cita APA (7a ed.)

Copeland, D. a. (2013). Build awesome command-line applications in Ruby 2: Control your computer, simplify your life (1st edition.). The Pragmatic Bookshelf.

Cita Chicago Style (17a ed.)

Copeland, David author. Build Awesome Command-line Applications in Ruby 2: Control Your Computer, Simplify Your Life. 1st edition. Dallas, Texas ; Raleigh, North Carolina: The Pragmatic Bookshelf, 2013.

Cita MLA (9a ed.)

Copeland, David author. Build Awesome Command-line Applications in Ruby 2: Control Your Computer, Simplify Your Life. 1st edition. The Pragmatic Bookshelf, 2013.