Design patterns : elements of reusable object-oriented software.

MLA

Gamma, Erich. Design Patterns : Elements of Reusable Object-oriented Software. Mass.: Addison-Wesley, .200.

APA

Gamma, E. (.200). Design patterns : elements of reusable object-oriented software. Mass.: Addison-Wesley.

Chicago

Gamma, Erich, Design Patterns: Elements of Reusable Object-Oriented Software. Mass.: Addison-Wesley, .200.