Gupta, K., Sleezer, C., & Russ-Eft, D. F. (2007). A practical guide to needs assessment. Pfeiffer/Wiley: ASTD.
Chicago Style (17. basım) AtıfGupta, Kavita, Catherine Sleezer, ve Darlene F. Russ-Eft. A Practical Guide to Needs Assessment. San Francisco, CA: Pfeiffer/Wiley: ASTD, 2007.
MLA (9th ed.) AtıfGupta, Kavita, et al. A Practical Guide to Needs Assessment. Pfeiffer/Wiley: ASTD, 2007.
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