Viora Budiman, J. ., and M. . Kurniawan. “Ivocard Development As a Media For Learning English Vocabulary for Children Aged 4-5 Years”. Golden Age: Jurnal Ilmiah Tumbuh Kembang Anak Usia Dini, vol. 7, no. 3, Sept. 2022, pp. 133-42, doi:10.14421/jga.2022.73-03.