APA-viite (7. p.)

Valacich, J. S. (2021). Modern systems analysis and design (Ninth edition.). Pearson Education.

Chicago-viite (17. p.)

Valacich, Joseph S. Modern Systems Analysis and Design. Ninth edition. United Kingdom: Pearson Education, 2021.

MLA-viite (9. p.)

Valacich, Joseph S. Modern Systems Analysis and Design. Ninth edition. Pearson Education, 2021.