Alexander, I., & Beus-Dukic, L. (2009). Discovering requirements: How to specify products and services. Wiley.
Chicago (17e ed.) BronvermeldingAlexander, Ian, en Ljerka Beus-Dukic. Discovering Requirements: How to Specify Products and Services. Chichester, West Sussex, England: Wiley, 2009.
MLA (9e ed.) BronvermeldingAlexander, Ian, en Ljerka Beus-Dukic. Discovering Requirements: How to Specify Products and Services. Wiley, 2009.
Let op: Deze citaties zijn niet altijd 100% accuraat.