Mallonga, R. S. (1976). The supervisory practices of elementary school principals in the Division of Cagayan [microform. Photoduplication Service University of the Philippines Library.
Citace podle Chicago (17th ed.)Mallonga, Rosario Singson. The Supervisory Practices of Elementary School Principals in the Division of Cagayan [microform. Quezon City: Photoduplication Service University of the Philippines Library, 1976.
Citace podle MLA (9th ed.)Mallonga, Rosario Singson. The Supervisory Practices of Elementary School Principals in the Division of Cagayan [microform. Photoduplication Service University of the Philippines Library, 1976.
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