Purwani, Rina, and Dian Mustikasari. “Pengembangan Buku Pengayaan Menulis Karangan Naratif Yang Berwawasan Kesantunan Bagi Peserta Didik Kelas VII SMP: Development of Enrichment Books Writing Narrative Essays With Politeness Insights for Grade VII Junior High School Students”. Jurnal Bastrindo 3, no. 1 (June 26, 2022): 53-68. Accessed November 26, 2022. https://bastrindo.jurnal.unram.ac.id/index.php/jb/article/view/380.