Dating, A. A. (1977). Teachers' opinions on the competencies needed by elementary school principals in Camarines Norte, 1969-1970 [microform]. Photoduplication Service. University of the Philippines Library.
Chicagoスタイル(17版)引用形式Dating, Agustin A. Teachers' Opinions on the Competencies Needed by Elementary School Principals in Camarines Norte, 1969-1970 [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.
MLA(9版)引用形式Dating, Agustin A. Teachers' Opinions on the Competencies Needed by Elementary School Principals in Camarines Norte, 1969-1970 [microform]. Photoduplication Service. University of the Philippines Library, 1977.
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