Plaag. On the Waters of the Wissahickon. University of South Carolina Press.
芝加哥风格引文Plaag. On the Waters of the Wissahickon. University of South Carolina Press.
MLA引文Plaag. On the Waters of the Wissahickon. University of South Carolina Press.
警告：这些引文格式不一定是100％准确.