Land classification sub-province of Ifugao, province of Isabela.
Chicagoスタイル(17版)引用形式Land Classification Sub-province of Ifugao, Province of Isabela. 1961.
MLA(9版)引用形式Land Classification Sub-province of Ifugao, Province of Isabela.
警告: この引用は必ずしも正確ではありません.