Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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