Citazione Stile APA (7a Edizione)

Gessford, J. E. (1980). Modern information systems: Designed for decision support. Addison-Wesley.

Citazione stile Chigago Style (17a edizione)

Gessford, John Evans. Modern Information Systems: Designed for Decision Support. Reading: Addison-Wesley, 1980.

Citatione MLA (9a ed.)

Gessford, John Evans. Modern Information Systems: Designed for Decision Support. Addison-Wesley, 1980.