Viray, L. A. (1992). The national integrated protected area system law.
Chicagoスタイル(17版)引用形式Viray, Leo A. The National Integrated Protected Area System Law. 1992.
MLA(9版)引用形式Viray, Leo A. The National Integrated Protected Area System Law. 1992.
警告: この引用は必ずしも正確ではありません.