Apacible, M. L., Formadero, Z. D., & Placido, J. P. (1981). Population and profile of Metropolitan Manila: Interim report. Management Information System Division, Planning Support and Information Service Office of the Commissioner for Planning, Metropolitan Manila Commission.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Apacible, Mafe L., Zelpha D. Formadero, و Johanna P. Placido. Population and Profile of Metropolitan Manila: Interim Report. [Quezon City]: Management Information System Division, Planning Support and Information Service Office of the Commissioner for Planning, Metropolitan Manila Commission, 1981.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Apacible, Mafe L., et al. Population and Profile of Metropolitan Manila: Interim Report. Management Information System Division, Planning Support and Information Service Office of the Commissioner for Planning, Metropolitan Manila Commission, 1981.