Fritzsch, Ralph B. “Activity-Based Costing And The Theory Of Constraints: Using Time Horizons To Resolve Two Alternative Concepts Of Product Cost”. Journal of Applied Business Research (JABR) 14, no. 1 (January 1, 1998): 83–90. Accessed July 17, 2024. https://clutejournals.com/index.php/JABR/article/view/5730.