Cita APA (7th ed.)

Hoffer, J. A., George, J. F., & Valacich, J. S. (1999). Modern systems analysis and design (2nd ed.). Addison-Wesley.

Cita Chicago (17th ed.)

Hoffer, Jeffrey A., Joey F. George, i Joseph S. Valacich. Modern Systems Analysis and Design. 2nd ed. Reading, Mass: Addison-Wesley, 1999.

Cita MLA (9th ed.)

Hoffer, Jeffrey A., et al. Modern Systems Analysis and Design. 2nd ed. Addison-Wesley, 1999.