Arias, P. R. (1997). Why upland farmers adopt conservation measures. Manila Bulletin.
Chicagoスタイル(17版)引用形式Arias, Priscila R. "Why Upland Farmers Adopt Conservation Measures." Manila Bulletin 1997.
MLA(9版)引用形式Arias, Priscila R. "Why Upland Farmers Adopt Conservation Measures." Manila Bulletin, 1997.
警告: この引用は必ずしも正確ではありません.