Agtarap, C. I. (1974). Teaching mathematics in the Ilocos Norte National High Schoo, Laoag City, and Bacarra National Comprehensive High School, Bacarra, Ilocos Norte: 1970-1971 [microform]. Photoduplication Service, University of the Philippines Library.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAgtarap, Conchita I. Teaching Mathematics in the Ilocos Norte National High Schoo, Laoag City, and Bacarra National Comprehensive High School, Bacarra, Ilocos Norte: 1970-1971 [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1974.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAgtarap, Conchita I. Teaching Mathematics in the Ilocos Norte National High Schoo, Laoag City, and Bacarra National Comprehensive High School, Bacarra, Ilocos Norte: 1970-1971 [microform]. Photoduplication Service, University of the Philippines Library, 1974.