Spengler, J. J. (1968). France faces depopulation. Greenwood.
芝加哥风格引文Spengler, Joseph J. France Faces Depopulation. New York: Greenwood, 1968.
MLA引文Spengler, Joseph J. France Faces Depopulation. Greenwood, 1968.
警告：这些引文格式不一定是100％准确.
APA引文