International Conference on Lead, Lead Development Association, & European Lead Development Committee. (1962). Lead ... Lead Development Association.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)International Conference on Lead, Lead Development Association, و European Lead Development Committee. Lead ... London: Lead Development Association, 1962.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)International Conference on Lead, et al. Lead ... Lead Development Association, 1962.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.