Hervinna Febriani Sitorus, Putri Vaniarisa Sinaga, Syntia Devi Lumban Gaol, Rosalina Imelda Octaviana Situmorang, and Selviana Napitupulu. 2022. “Speaking Problems in Vocational High School”. International Journal of Education and Humanities 2 (1):13-23. https://doi.org/10.58557/ijeh.v2i1.41.