Viado, J. (1968). The natural resources position of the Philippines. [publisher not identified].
Chicagoスタイル(17版)引用形式Viado, Jose. The Natural Resources Position of the Philippines. [place of publication not identified]: [publisher not identified], 1968.
MLA(9版)引用形式Viado, Jose. The Natural Resources Position of the Philippines. [publisher not identified], 1968.
警告: この引用は必ずしも正確ではありません.