پیاز پژوهش ساندرز و همکاران
Saunders, M., Lewis, P., & Thornhill, A. (2015). Research Methods for Business Students. 7th Edition. United Kingdom: Pearson Education.

پیاز پژوهش ساندرز و همکاران
Saunders, M., Lewis, P., & Thornhill, A. (2015). Research Methods for Business Students. 7th Edition. United Kingdom: Pearson Education.
