APA (7e ed.) Bronvermelding

Ward, P. T. (1984). Systems development without pain: A user's guide to modeling organizational patterns. Yourdon Press.

Chicago (17e ed.) Bronvermelding

Ward, Paul T. Systems Development Without Pain: A User's Guide to Modeling Organizational Patterns. New York: Yourdon Press, 1984.

MLA (9e ed.) Bronvermelding

Ward, Paul T. Systems Development Without Pain: A User's Guide to Modeling Organizational Patterns. Yourdon Press, 1984.