World Health Organization. (2006). Education material for teachers of midwifery: Midwifery education modules. World Health Organization.
芝加哥风格引文World Health Organization. Education Material for Teachers of Midwifery: Midwifery Education Modules. Geneva: World Health Organization, 2006.
MLA引文World Health Organization. Education Material for Teachers of Midwifery: Midwifery Education Modules. World Health Organization, 2006.
警告：这些引文格式不一定是100％准确.