Porterfield, B. (1978). A loose herd of Texans. Texas A & M University Press.
芝加哥风格引文Porterfield, Bill. A Loose Herd of Texans. College Station: Texas A & M University Press, 1978.
MLA引文Porterfield, Bill. A Loose Herd of Texans. Texas A & M University Press, 1978.
警告：这些引文格式不一定是100％准确.