WANDARI, F. T.; DAMRI, D.; SOPANDI, A. A.; KUSUMASTUTI, G. Improving the Ability to Recognize Alphabet Letters Through the Use of Educational Posters on Alphabet Sounds for Mildly Mentally Impaired Children. Edumaspul: Jurnal Pendidikan, v. 8, n. 1, 1 Mar. 2024.