Citazione Stile APA (7a Edizione)

Ward, J. R. (1982). An Introduction to the DB Relational Database Management System. International Institute for Applied Systems Analysis.

Citazione stile Chigago Style (17a edizione)

Ward, John Robert. An Introduction to the DB Relational Database Management System. Laxenburg: International Institute for Applied Systems Analysis, 1982.

Citatione MLA (9a ed.)

Ward, John Robert. An Introduction to the DB Relational Database Management System. International Institute for Applied Systems Analysis, 1982.