Rachmanda, Reza, and Diah Wulandari. 2021. “RANCANG BANGUN ALAT UJI KEKAKUAN PEGAS”. Jurnal Rekayasa Mesin 6 (03), 49-55. https://ejournal.unesa.ac.id/index.php/jurnal-rekayasa-mesin/article/view/45081.