Angeles, E. Y. (1999). Educational challenges we face in the 21st century. Manila Bulletin.
Chicagoスタイル(17版)引用形式Angeles, Emmanuel Y. "Educational Challenges We Face in the 21st Century." Manila Bulletin 1999.
MLA(9版)引用形式Angeles, Emmanuel Y. "Educational Challenges We Face in the 21st Century." Manila Bulletin, 1999.
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