World Health Organization, United Nations Development Programme, & Reid, E. (1998). Cancer pain relief and palliative care in children. World Health Organization.
芝加哥风格引文World Health Organization, United Nations Development Programme, 与 Elizabeth Reid. Cancer Pain Relief and Palliative Care in Children. Geneva: World Health Organization, 1998.
MLA引文World Health Organization, et al. Cancer Pain Relief and Palliative Care in Children. World Health Organization, 1998.
警告：这些引文格式不一定是100％准确.