Ristiyani, Khoiriyyah Afifatul, and Mila Roysa. “Spelling Errors in Official Letters in Kudus Regency”. ICCCM Journal of Social Sciences and Humanities 1, no. 1 (February 10, 2022): 37–42. Accessed September 16, 2024. https://ejicccm.com/index.php/icccmjssh/article/view/138.