Literature Study of the Effectiveness of Picture Story Media in Teaching Speaking Skills for Elementary School Students: Studi Literatur Efektifitas Media Cerita Bergambar Dalam Mengajarkan Keterampilan Berbicara Siswa Sekolah Dasar. acopen 2022, 6, 10.21070/acopen.6.2022.1485. https://doi.org/10.21070/acopen.6.2022.1485.