Citazione Stile APA (7a Edizione)

Modell, M. E. (1988). A professional's guide to systems analysis. McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

Modell, Martin E. A Professional's Guide to Systems Analysis. New York: McGraw-Hill, 1988.

Citatione MLA (9a ed.)

Modell, Martin E. A Professional's Guide to Systems Analysis. McGraw-Hill, 1988.