Estupigan, R. (1999). Putting premium on quality tertiary education. Manila Bulletin.
Chicagoスタイル(17版)引用形式Estupigan, Ruth. "Putting Premium on Quality Tertiary Education." Manila Bulletin 1999.
MLA(9版)引用形式Estupigan, Ruth. "Putting Premium on Quality Tertiary Education." Manila Bulletin, 1999.
警告: この引用は必ずしも正確ではありません.