Cornes, R. (1990). Business systems design and development. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Cornes, Ralph. Business Systems Design and Development. New York: Prentice-Hall, 1990.
Lua MLA (9ú heag.)Cornes, Ralph. Business Systems Design and Development. Prentice-Hall, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.