Thurber, D. (1997). Poverty, erosion threaten famed Banaue rice terraces. Manila Bulletin.
Chicagoスタイル(17版)引用形式Thurber, David. "Poverty, Erosion Threaten Famed Banaue Rice Terraces." Manila Bulletin 1997.
MLA(9版)引用形式Thurber, David. "Poverty, Erosion Threaten Famed Banaue Rice Terraces." Manila Bulletin, 1997.
警告: この引用は必ずしも正確ではありません.