Professional English Teaching Strategy for Speaking Skill on Tertiary Level of Vocational Education in 2013-2023: Systematic Literature Review. Lembaran Ilmu Kependidikan, [S. l.], v. 55, n. 2, 2026. DOI: 10.15294/lik.v55i2.36395. Disponível em: https://journal.unnes.ac.id/journals/LIK/article/view/36395. Acesso em: 14 sep. 2026.