MUCHID, MOCHAMMAD, et al. “IDENTIFIKASI KETEBALAN CAT DIES FRAME SPEAKER METODE PENGUKURAN DIMENSI AFTER & BEFORE”. Jurnal INSTEK (Informatika Sains Dan Teknologi), vol. 6, no. 2, Sept. 2021, pp. 208-17, doi:10.24252/instek.v6i2.24133.