Deva, Bara, and Is Mardianto. “Teknik Audio Forensik Menggunakan Metode Analisis Formant Bandwidth, Pitch Dan Analisis Likelihood Ratio”. Ultimatics : Jurnal Teknik Informatika 10, no. 2 (March 19, 2019): 67-72. Accessed September 19, 2019. http://ejournals.umn.ac.id/index.php/TI/article/view/936.