Perez, A. Y. (1977). A study of thre maternal health services of the rural health unit, Salcedo, Eastern Samar [microform]. Photoduplication Service. University of the Philippines Library.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPerez, Alfredo Y. A Study of Thre Maternal Health Services of the Rural Health Unit, Salcedo, Eastern Samar [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPerez, Alfredo Y. A Study of Thre Maternal Health Services of the Rural Health Unit, Salcedo, Eastern Samar [microform]. Photoduplication Service. University of the Philippines Library, 1977.
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