Calasagsag, S. (1997). How sustainable is countryside reforestation? Manila Chronicle.
Chicagoスタイル(17版)引用形式Calasagsag, Susan. "How Sustainable Is Countryside Reforestation?" Manila Chronicle 1997.
MLA(9版)引用形式Calasagsag, Susan. "How Sustainable Is Countryside Reforestation?" Manila Chronicle, 1997.
警告: この引用は必ずしも正確ではありません.