Tan, E. A. (1971). The level of unemployment in the Philippines. s.n.].
Chicagoスタイル(17版)引用形式Tan, Edita Abella. The Level of Unemployment in the Philippines. [Quezon City: s.n.], 1971.
MLA(9版)引用形式Tan, Edita Abella. The Level of Unemployment in the Philippines. s.n.], 1971.
警告: この引用は必ずしも正確ではありません.