Cornes, R. (1990). Business systems design and development. Prentice-Hall.
Chicago Style aipamenaCornes, Ralph. Business Systems Design and Development. New York: Prentice-Hall, 1990.
MLA aipamenaCornes, Ralph. Business Systems Design and Development. Prentice-Hall, 1990.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.