Pramono, F., Didi Rosiyadi and Windu Gata 2019. Integrasi N-gram, Information Gain, Particle Swarm Optimation di Naïve Bayes untuk Optimasi Sentimen Google Classroom . Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi). 3, 3 (Dec. 2019), 383 - 388. DOI:https://doi.org/10.29207/resti.v3i3.1119.