Duchan, J. S. (2012). Powerful voices: The musical and social world of collegiate a cappella. University of Michigan Press.
芝加哥风格引文Duchan, Joshua S. Powerful Voices: The Musical and Social World of Collegiate a Cappella. Ann Arbor: University of Michigan Press, 2012.
MLA引文Duchan, Joshua S. Powerful Voices: The Musical and Social World of Collegiate a Cappella. University of Michigan Press, 2012.
警告：这些引文格式不一定是100％准确.