Duldulao, M. D. (2005). The art collector's guidebook (Revised edition.). University of Pangasinan.
芝加哥风格引文Duldulao, Manuel D. The Art Collector's Guidebook. Revised edition. Dagupan City: University of Pangasinan, 2005.
MLA引文Duldulao, Manuel D. The Art Collector's Guidebook. Revised edition. University of Pangasinan, 2005.
警告：这些引文格式不一定是100％准确.