Powell. Learning under Fire. Texas A&M University Press.
芝加哥风格引文Powell. Learning Under Fire. Texas A&M University Press.
MLA引文Powell. Learning Under Fire. Texas A&M University Press.
警告：这些引文格式不一定是100％准确.
APA引文
Powell. Learning under Fire. Texas A&M University Press.
芝加哥风格引文Powell. Learning Under Fire. Texas A&M University Press.
MLA引文Powell. Learning Under Fire. Texas A&M University Press.