National Safety Council. School and College Division. School shop safety. School and College Division, National Safety Council.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Safety Council. School and College Division. School Shop Safety. Chicago: School and College Division, National Safety Council.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)National Safety Council. School and College Division. School Shop Safety. School and College Division, National Safety Council.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.