Pornchai Jedaman, P. D. S. T. S. S. . “PROBLEMS STATE AND EXPECTATIONS WITH USE SIGN LANGUAGE LEARNING MANAGEMENT BASE INTELLIGENT OF HEARING IMPAIRED TO EFFECTIVENESS”. Annals of the Romanian Society for Cell Biology, vol. 25, no. 6, June 2021, pp. 7619-25, https://www.annalsofrscb.ro/index.php/journal/article/view/6911.