Philippines. University. Inter-Departmental Reference Service & Philippines. University. Library. (1956). Index to Philippine periodicals. Inter-Departmental Reference Service, Institute of Public Administration, University of the Philippines.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Philippines. University. Inter-Departmental Reference Service و Philippines. University. Library. Index to Philippine Periodicals. Manila: Inter-Departmental Reference Service, Institute of Public Administration, University of the Philippines, 1956.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Philippines. University. Inter-Departmental Reference Service و Philippines. University. Library. Index to Philippine Periodicals. Inter-Departmental Reference Service, Institute of Public Administration, University of the Philippines, 1956.