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Kilanowski JF, Jepsen SD, Berenbon R. Reliability Analysis of Test Questions to Support a National Tractor and Machinery Safety Certification Program. JAE [Internet]. 2025 Dec. 11 [cited 2026 Jun. 19];66(4):Article 33. Available from: https://jae-online.org/index.php/jae/article/view/3277