@article{
  author = {Reswari, Cinthia, Rukmini, Dwi, Agustien, Helena, Sutopo, Djoko},
  title = {Vocational Secondary School English Coursebooks Based on Social Semiotic Perspective: Voices from Engineering Professionals <br> DOR: 20.1001.1.23223898.2021.9.36.1.7},
  journal = {},
  year = {2021},
  volume = {9},
  number = {36},
  pages = {11-20},
  doi = {}
}