Subong, N. L. (1971). The teaching difficulties of elementary school teachers of modern mathematics in some selected public schools in Manila.
Čikaški stil citiranja (17. izdanje)Subong, Nieva Liberia. The Teaching Difficulties of Elementary School Teachers of Modern Mathematics in Some Selected Public Schools in Manila. 1971.
MLA način citiranja (9. izdanje)Subong, Nieva Liberia. The Teaching Difficulties of Elementary School Teachers of Modern Mathematics in Some Selected Public Schools in Manila. 1971.
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