Caces, C. V. (1976). The teaching of elelmentary science in grades V and VI of Tubao Elementary Schools, Sto. Tomas District, Division of La Union, 1962-1963 [microform]. Photoduplication Service. University of the Philippines Libraru.
Chicago-referens (17:e uppl.)Caces, Carolina Verceles. The Teaching of Elelmentary Science in Grades V and VI of Tubao Elementary Schools, Sto. Tomas District, Division of La Union, 1962-1963 [microform]. Quezon City: Photoduplication Service. University of the Philippines Libraru, 1976.
MLA-referens (9:e uppl.)Caces, Carolina Verceles. The Teaching of Elelmentary Science in Grades V and VI of Tubao Elementary Schools, Sto. Tomas District, Division of La Union, 1962-1963 [microform]. Photoduplication Service. University of the Philippines Libraru, 1976.