Gatacilo, T. L. (1976). Instructional practices in the social studies in Grades V and VI in the Division of Northern Samar [microform]. Photoduplication Service, University of the Philippines Library.
Chicagoスタイル(17版)引用形式Gatacilo, Tomas L. Instructional Practices in the Social Studies in Grades V and VI in the Division of Northern Samar [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1976.
MLA(9版)引用形式Gatacilo, Tomas L. Instructional Practices in the Social Studies in Grades V and VI in the Division of Northern Samar [microform]. Photoduplication Service, University of the Philippines Library, 1976.
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