Não informado. (1963). Occupational safety and health abstracts. International Occupational Safety and Health Information Centre.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. Occupational Safety and Health Abstracts. Geneva, Suíça: International Occupational Safety and Health Information Centre, 1963.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. Occupational Safety and Health Abstracts. International Occupational Safety and Health Information Centre, 1963.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.
