Principe, A. I. (1977). An evaluation of the physical plant of the U.P. High-Preparatory School [microform]. Photoduplication Service. University of the Philippines Library.
芝加哥风格引文Principe, Alfredo Imperial. An Evaluation of the Physical Plant of the U.P. High-Preparatory School [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.
MLA引文Principe, Alfredo Imperial. An Evaluation of the Physical Plant of the U.P. High-Preparatory School [microform]. Photoduplication Service. University of the Philippines Library, 1977.
警告：这些引文格式不一定是100％准确.