Okki Khusnul Mahmudin, and Muhamad Fitri. “Uji Fungsional Dan Analisis Validasi Alat Uji Putaran Kritis Poros Dengan Beban”. ALMIKANIKA, vol. 5, no. 3, July 2023, pp. 134-40, https://ejournal.uika-bogor.ac.id/index.php/ALMIKANIKA/article/view/14738.