@article{
  author = {نادی, محمد علی, گردان‌شکن, مریم, گلپرور, محسن},
  title = {Effect of Critical Thinking, Problem Solving and Meta-Cognitive on Students' Self-Directed Learning},
  journal = {Research in Curriculum Planning},
  year = {2011},
  volume = {7},
  number = {2},
  pages = {53-61},
  doi = {}
}