W. D. Ningtyas and D. Nastiti, “The Relationship Between Achievement Motivation and Academic Flow in Middle School Students of Muhammadiyah 8 Tanggulangin Sidoarjo during the Covid-19 Pandemic: Hubungan Antara Motivasi Berprestasi dengan Flow Akademik pada Siswa Sekolah Menengah Pertama Muhammadiyah 8 Tanggulangin Sidoarjo pada Masa Pandemi Covid-19”, jims, vol. 2, p. 10.21070/jims.v2i0.1541, Feb. 2022.