H. Sinem Boyacı: Boyacı, H. S. (2019). The proportional reasoning ability of preservice mathematics teachers: A mixed method study. Unpublished master's thesis. Boğaziçi University, Istanbul.
H. Sinem Boyacı: Boyacı, H. S. (2019). The proportional reasoning ability of preservice mathematics teachers: A mixed method study. Unpublished master's thesis. Boğaziçi University, Istanbul.