1.
Taufiq W, Mandarani V. Buku Ajar Let’s Learn English Progressively. umsidapress [Internet]. 2021 Aug. 22 [cited 2025 Jul. 4];:1-157. Available from: https://press.umsida.ac.id/index.php/umsidapress/article/view/978-979-3401-72-0