Frankel, L. B. (1970). This crowded world; an introduction to the study of population. Columbia Books.
芝加哥风格引文Frankel, Lillian Berson. This Crowded World; an Introduction to the Study of Population. Washington: Columbia Books, 1970.
MLA引文Frankel, Lillian Berson. This Crowded World; an Introduction to the Study of Population. Columbia Books, 1970.
警告：这些引文格式不一定是100％准确.