Dela Pena, A. M. (1981). Development of learning modules in health education for grade IV [microform]. Photoduplication Service. University of the Philippines Library.
Lua i Stíl Chicago (17ú heag.)Dela Pena, Angelita Malicdem. Development of Learning Modules in Health Education for Grade IV [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1981.
Lua MLA (9ú heag.)Dela Pena, Angelita Malicdem. Development of Learning Modules in Health Education for Grade IV [microform]. Photoduplication Service. University of the Philippines Library, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.