Villegas, A. D. (1963). A national library. University of the Philippines.
Chicagoスタイル(17版)引用形式Villegas, Aurora D. A National Library. Quezon City: University of the Philippines, 1963.
MLA(9版)引用形式Villegas, Aurora D. A National Library. University of the Philippines, 1963.
警告: この引用は必ずしも正確ではありません.