Philippines. Environmental Management Bureau. (1989). Ecological profile of Batangas. The Bureau.
Chicagoスタイル(17版)引用形式Philippines. Environmental Management Bureau. Ecological Profile of Batangas. [Quezon City]: The Bureau, 1989.
MLA(9版)引用形式Philippines. Environmental Management Bureau. Ecological Profile of Batangas. The Bureau, 1989.
警告: この引用は必ずしも正確ではありません.