Sulistyo, Lilik, and Iwan Junaedi. 2020. “Pembelajaran LSQ (learning Stars With a Question) Era Pandemi Covid-19 Dengan Media Whatsapp”. Prosiding Seminar Nasional Matematika Dan Pendidikan Matematika 5 (August):416-22. https://conference.upgris.ac.id/index.php/senatik/article/view/1018.