Jurgens, C. (1974). Ang catecismo paagi sa larawan [microform]. Photoduplication Service, University of the Philippines Library.
Chicagoスタイル(17版)引用形式Jurgens, Constancio. Ang Catecismo Paagi Sa Larawan [microform]. [Quezon City]: Photoduplication Service, University of the Philippines Library, 1974.
MLA(9版)引用形式Jurgens, Constancio. Ang Catecismo Paagi Sa Larawan [microform]. Photoduplication Service, University of the Philippines Library, 1974.
警告: この引用は必ずしも正確ではありません.