APA (7th ed.) Citation

(1999). Design patterns: Elements of reusable object-oriented software (17. print.). Addison-Wesley.

Chicago Style (17th ed.) Citation

Design Patterns: Elements of Reusable Object-oriented Software. 17. print. Reading, Mass. [u.a.]: Addison-Wesley, 1999.

MLA (9th ed.) Citation

Design Patterns: Elements of Reusable Object-oriented Software. 17. print. Addison-Wesley, 1999.

Warning: These citations may not always be 100% accurate.