Não informado. (1960). List of Bureau of Mines publications and articles with subject and author index. U.S. Department of the Interior, Bureau of Mines.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. List of Bureau of Mines Publications and Articles with Subject and Author Index. Washington: U.S. Department of the Interior, Bureau of Mines, 1960.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. List of Bureau of Mines Publications and Articles with Subject and Author Index. U.S. Department of the Interior, Bureau of Mines, 1960.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.