Keyfitz, N. (1968). Introduction to the mathematics of population. Addison-Wesley.
芝加哥风格引文Keyfitz, Nathan. Introduction to the Mathematics of Population. Reading, Mass: Addison-Wesley, 1968.
MLA引文Keyfitz, Nathan. Introduction to the Mathematics of Population. Addison-Wesley, 1968.
警告：这些引文格式不一定是100％准确.