Maytham Hazim Azeez Khzaee, Nuha Aadi Abd Ali, and Alaa Miran Hussein. “REDUCING UNJUSTIFIED COSTS BY USING VALUE STUDIES AND FUNCTIONAL ANALYSIS (A FIELD STUDY)”. Galaxy International Interdisciplinary Research Journal, vol. 12, no. 5, May 2024, pp. 570-8, https://internationaljournals.co.in/index.php/giirj/article/view/5640.