Vera Cruz, E. A. (1979). The Isabela Public School Teachers' Association: Its growth and responsibilities to its members, to society and to international understanding and cooperation [microform]. Photoduplication Service. University of the Philippines Library.
Citace podle Chicago (17th ed.)Vera Cruz, Esperanza A. The Isabela Public School Teachers' Association: Its Growth and Responsibilities to Its Members, to Society and to International Understanding and Cooperation [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1979.
Citace podle MLA (9th ed.)Vera Cruz, Esperanza A. The Isabela Public School Teachers' Association: Its Growth and Responsibilities to Its Members, to Society and to International Understanding and Cooperation [microform]. Photoduplication Service. University of the Philippines Library, 1979.