Olsen, R. (2008). Design patterns in Ruby. Addison-Wesley.
Chicagoスタイル(17版)引用形式Olsen, Russ. Design Patterns in Ruby. Upper Saddle River, N.J: Addison-Wesley, 2008.
MLA(9版)引用形式Olsen, Russ. Design Patterns in Ruby. Addison-Wesley, 2008.
警告: この引用は必ずしも正確ではありません.