Hart-Davidson. Rhet Ops. University of Pittsburgh Press.
芝加哥风格引文Hart-Davidson. Rhet Ops. University of Pittsburgh Press.
MLA引文Hart-Davidson. Rhet Ops. University of Pittsburgh Press.
警告：这些引文格式不一定是100％准确.
APA引文
Hart-Davidson. Rhet Ops. University of Pittsburgh Press.
芝加哥风格引文Hart-Davidson. Rhet Ops. University of Pittsburgh Press.
MLA引文Hart-Davidson. Rhet Ops. University of Pittsburgh Press.