Environmental Health and Safety, T. P. S. U. Lead paint and other heavy metal pigments exposure control and disposal procedures.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Environmental Health and Safety, The Pennsylvania State University. Lead Paint and Other Heavy Metal Pigments Exposure Control and Disposal Procedures.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Environmental Health and Safety, The Pennsylvania State University. Lead Paint and Other Heavy Metal Pigments Exposure Control and Disposal Procedures.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.