World Health Organization & World Health Organization. Aged Population, principles for evaluating the effects of chemicals.
芝加哥风格引文World Health Organization 与 World Health Organization. Aged Population, Principles for Evaluating the Effects of Chemicals.
MLA引文World Health Organization 与 World Health Organization. Aged Population, Principles for Evaluating the Effects of Chemicals.
警告：这些引文格式不一定是100％准确.