Ningtyas, Wahyu Dewi, and Dwi Nastiti. 2022. “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”. Journal of Islamic and Muhammadiyah Studies 2 (February):10.21070/jims.v2i0.1541. https://doi.org/10.21070/jims.v2i0.1541.