KAUFMANN, W. J. (1973). Relativity and cosmology. Harper and Row Pub.
芝加哥风格引文KAUFMANN, Williuam J. Relativity and Cosmology. New York: Harper and Row Pub, 1973.
MLA引文KAUFMANN, Williuam J. Relativity and Cosmology. Harper and Row Pub, 1973.
警告：这些引文格式不一定是100％准确.