APA-viite (7. p.)

Witkin, B. R., & Altschuld, J. W. (1995). Planning and conducting needs assessments: A practical guide. Sage.

Chicago-viite (17. p.)

Witkin, Belle Ruth, ja James W. Altschuld. Planning and Conducting Needs Assessments: A Practical Guide. Thousand Oaks: Sage, 1995.

MLA-viite (9. p.)

Witkin, Belle Ruth, ja James W. Altschuld. Planning and Conducting Needs Assessments: A Practical Guide. Sage, 1995.