APA način citiranja

Leffingwell, D., & Widrig, D. (2011). Managing Software Requirements: A Use Case Approach, Second Edition. Addison Wesley.

Čikaški stil citiranja

Leffingwell, Dean, i Don Widrig. Managing Software Requirements: A Use Case Approach, Second Edition. Addison Wesley, 2011.

MLA način citiranja

Leffingwell, Dean, i Don Widrig. Managing Software Requirements: A Use Case Approach, Second Edition. Addison Wesley, 2011.

Upozorenje: Ovi citati možda nisu uvijek 100% točni.