Utgard, R. O., & McKenzie, G. D. (1974). Man's finite earth. Burgess Pub. Co.
芝加哥风格引文Utgard, Russell O., 与 Garry D. McKenzie. Man's Finite Earth. Minneapolis: Burgess Pub. Co, 1974.
MLA引文Utgard, Russell O., 与 Garry D. McKenzie. Man's Finite Earth. Burgess Pub. Co, 1974.
警告：这些引文格式不一定是100％准确.