Hernandez, E. C. (1978). Distribution of radioelements in the massive sulfide deposits of Submakin, Paracale, Camarines Norte, Philippines [microform]. Photoduplication Service, University of the Philippines Library.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Hernandez, Elmer C. Distribution of Radioelements in the Massive Sulfide Deposits of Submakin, Paracale, Camarines Norte, Philippines [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1978.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Hernandez, Elmer C. Distribution of Radioelements in the Massive Sulfide Deposits of Submakin, Paracale, Camarines Norte, Philippines [microform]. Photoduplication Service, University of the Philippines Library, 1978.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.