Mahmoud، S. E.، و Yusuf، N. H. (2019). The Effect of Occupational Safety and Health Administration and Corporate Social Responsibiliy Implementation on Firm Valuation: Case of Egypt an Empirical Study. مجلة البحوث التجارية، مج41, ع1 ، 162 - 201. مسترجع من http://search.mandumah.com/Record/976968
Mahmoud، Samia Elsayed، و Nehad Hosny Yusuf. "The Effect of Occupational Safety and Health Administration and Corporate Social Responsibiliy Implementation On Firm Valuation: Case of Egypt an Empirical Study." مجلة البحوث التجارية مج41, ع1 (2019): 162 - 201. مسترجع من http://search.mandumah.com/Record/976968