Sofiyanurriyanti, Azwanda, Mahmud Basuki, Moh. Ainul Fais, and Silvana Mohamad. “Improvement of Songkok Production Process Through Defect Analysis Using Seven Tools and Failure Mode and Effect Analysis (FMEA)”. Jurnal Inotera 11, no. 1 (March 4, 2026): 118-128. Accessed May 2, 2026. https://inotera.poltas.ac.id/index.php/inotera/article/view/560.