Avancena, R. O. (1979). The birth rate of Cagayan de Oro City and some implications for economic growth and development [microform]. Photoduplication Service, University of the Philippines Library.
Chicago-referens (17:e uppl.)Avancena, Rosalia Ompoc. The Birth Rate of Cagayan De Oro City and Some Implications for Economic Growth and Development [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1979.
MLA-referens (9:e uppl.)Avancena, Rosalia Ompoc. The Birth Rate of Cagayan De Oro City and Some Implications for Economic Growth and Development [microform]. Photoduplication Service, University of the Philippines Library, 1979.
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