Dyfyniad APA

Leffingwell, D., & Widrig, D. (2001). Managing software requirements a unified approach. Addison Wesley.

Dyfyniad Arddull Chicago

Leffingwell, D., and D. Widrig. Managing Software Requirements a Unified Approach. Delhi: Addison Wesley, 2001.

Dyfyniad MLA

Leffingwell, D., and D. Widrig. Managing Software Requirements a Unified Approach. Addison Wesley, 2001.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.