Hapsari A, Simanjuntak EB, Fariza A, Nazwa F, Barus AFB, Pangaribuan DM, et al. Analisis Pemahaman Siswa Sekolah Dasar terhadap Struktur Kalimat Perfect Tense dan Past Perfect Continuous Tense. jptam [Internet]. 2025 May 31 [cited 2025 Jun. 29];9(2):14361-6. Available from: https://jptam.org/index.php/jptam/article/view/27563