Normi Mustapha. (2009). Stress among workers in selected SMI companies and coping strategies to improve health and safety at workplace.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Normi Mustapha. Stress Among Workers in Selected SMI Companies and Coping Strategies to Improve Health and Safety at Workplace. 2009.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Normi Mustapha. Stress Among Workers in Selected SMI Companies and Coping Strategies to Improve Health and Safety at Workplace. 2009.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.