Cita APA (7th ed.)

Grady, J. O. (2006). System requirements analysis. Elsevier Academic Press.

Cita Chicago (17th ed.)

Grady, Jeffrey O. System Requirements Analysis. Amsterdam ; Boston: Elsevier Academic Press, 2006.

Cita MLA (9th ed.)

Grady, Jeffrey O. System Requirements Analysis. Elsevier Academic Press, 2006.