Villegas, E. M. Negative judgments [microform]. Photoduplication Service.
Chicagoスタイル(17版)引用形式Villegas, Edberto MAlvar. Negative Judgments [microform]. Quezon City: Photoduplication Service.
MLA(9版)引用形式Villegas, Edberto MAlvar. Negative Judgments [microform]. Photoduplication Service.
警告: この引用は必ずしも正確ではありません.