Janu Akrama Wardhana, and Yuliant Sibaroni. “Aspect Level Sentiment Analysis on Zoom Cloud Meetings App Review Using LDA ”. Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) 5, no. 4 (August 20, 2021): 631 - 638. Accessed October 18, 2021. https://jurnal.iaii.or.id/index.php/RESTI/article/view/3143.