Cita APA (7th ed.)

Whitten, J. L., & Bentley, L. D. (1989). Systems analysis and design methods: Systems analysis and design methods (0-8016-5464-5.). Irwin.

Cita Chicago (17th ed.)

Whitten, Jeffrey L., i Lonnie D. Bentley. Systems Analysis and Design Methods: Systems Analysis and Design Methods. 0-8016-5464-5. Homewood, IL: Irwin, 1989.

Cita MLA (9th ed.)

Whitten, Jeffrey L., i Lonnie D. Bentley. Systems Analysis and Design Methods: Systems Analysis and Design Methods. 0-8016-5464-5. Irwin, 1989.