@article{
  author = {rgrg, fgfg, jfgvj, jgjufgu, khhvfhjv, hfghdc},
  title = {Analysis of Nelson Mandela's Thoughts and Performance in South Africa Based on Constructivism Approach},
  journal = {},
  year = {2016},
  volume = {8},
  issue = {31},
  pages = {169-193},
  doi = {},
  url = {https://sanad.iau.ir/fa/Article/960631}
}