O'Meara, W. (1979). Guns at the forks. University of Pittsburgh Press.
芝加哥风格引文O'Meara, Walter. Guns at the Forks. Pittsburgh: University of Pittsburgh Press, 1979.
MLA引文O'Meara, Walter. Guns at the Forks. University of Pittsburgh Press, 1979.
警告：这些引文格式不一定是100％准确.