Maller, J. (1983). Health and safety for workers: A study of conditions of health and safety in the metal industry in the Vaal Traingle. Johannesburg: Development Studies Group (DSG).
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Maller, Judy. Health and Safety for Workers: A Study of Conditions of Health and Safety in the Metal Industry in the Vaal Traingle. Johannesburg: Development Studies Group (DSG), 1983.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Maller, Judy. Health and Safety for Workers: A Study of Conditions of Health and Safety in the Metal Industry in the Vaal Traingle. Johannesburg: Development Studies Group (DSG), 1983.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.