1. Elite Careers and Family Commitment: It's (Still) about Gender;Coltrane;Annals of the American Academy of Political and Social Science,2004
2. National Health and Family Planning Commission of the People's Republic of China Local Family Planning Regulations http://www.nhfpc.gov.cn/zhuzhan/dftl/lists.shtml
3. NCES (National Center for Education Statistics) 2011 Table 603.60: Percentage of Bachelor's and Higher Level Degrees Awarded to Women, by Field of Study and Country: 2011 https://nces.ed.gov/programs/digest/d13/tables/dt13_603.60.asp