1.
Ulva U, Debie Susanti, Irma Yuliantina. Development of Number Board Media for Early Childhood Pre-Mathematics Introduction. PENA PAUD [Internet]. 2025 Dec. 21 [cited 2025 Dec. 22];6(2):202-14. Available from: https://ejournal.unib.ac.id/penapaud/article/view/44837