Hasanah, Nur. “Perbandingan Metode Membaca Glenn Doman Dan Metode ABACA Flashcard Untuk Anak Usia Dini”. Journal of Early Childhood Education and Research (JECER) 1, no. 1 (April 18, 2019): 17-34. Accessed August 20, 2019. http://ejournal.unikama.ac.id/index.php/jecer/article/view/3147.