Sagrera, M. (1990). Sex, population, and politics. Editorial Fundamentos.
芝加哥风格引文Sagrera, Martin. Sex, Population, and Politics. Madrid: Editorial Fundamentos, 1990.
MLA引文Sagrera, Martin. Sex, Population, and Politics. Editorial Fundamentos, 1990.
警告：这些引文格式不一定是100％准确.