Não informado. (1964). Index of Conference Proceedings Received by the NLL. National Lending Library for Science and Technology.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. Index of Conference Proceedings Received by the NLL. Boston, Inglaterra: National Lending Library for Science and Technology, 1964.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. Index of Conference Proceedings Received by the NLL. National Lending Library for Science and Technology, 1964.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.