Voice of America (Radio program). (1964). The population of the world. [s.n.].
芝加哥风格引文Voice of America (Radio program). The Population of the World. [Washington: [s.n.], 1964.
MLA引文Voice of America (Radio program). The Population of the World. [s.n.], 1964.
警告：这些引文格式不一定是100％准确.