International Labour Office & ebrary, Inc. (2007). Safe maternity and the world of work. International Labour Organization.
芝加哥风格引文International Labour Office 与 Inc ebrary. Safe Maternity and the World of Work. Geneva: International Labour Organization, 2007.
MLA引文International Labour Office 与 Inc ebrary. Safe Maternity and the World of Work. International Labour Organization, 2007.
警告：这些引文格式不一定是100％准确.