APA (7th ed.) Citation

Leffingwell Dean & Widrig Don. (2000). Managing software requirements: A unified approach. Addison-Wesley.

Chicago Style (17th ed.) Citation

Leffingwell Dean and Widrig Don. Managing Software Requirements: A Unified Approach. Addison-Wesley, 2000.

MLA (8th ed.) Citation

Leffingwell Dean and Widrig Don. Managing Software Requirements: A Unified Approach. Addison-Wesley, 2000.

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