World Health Organization & Cassel, J. (1970). The Education and training of engineers for environmental health. World Health Organization.
芝加哥风格引文World Health Organization 与 John Cassel. The Education and Training of Engineers for Environmental Health. Geneva: World Health Organization, 1970.
MLA引文World Health Organization 与 John Cassel. The Education and Training of Engineers for Environmental Health. World Health Organization, 1970.
警告：这些引文格式不一定是100％准确.