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Sulastri, Sulastri (2025) Pengaruh financial literacy perceived usefulness dan advertising terhadap loyalitas pengguna QRIS di Kota Padangsidimpuan. Undergraduate thesis, UIN Syekh Ali Hasan Ahmad Addary Padangsidimpuan.
Sulastri, Sulastri (2017) The correlation between learning style and students’ speaking ability at grade VIII SMP Negeri 6 Panyabungan. Undergraduate thesis, IAIN Padangsidimpuan.
Sulastri, Sulastri (2013) Improving students’ self-confidence in speaking ability through simulation technique at grade x SMA Negeri 8 Padangsidimpuan. Undergraduate thesis, IAIN Padangsidimpuan.