^ Hvistendahl, Mara (17 September 2010). "Has China Outgrown The One-Child Policy?". Science. 329 (5998): 1458–61. Bibcode:2010Sci...329.1458H. doi:10.1126/science.329.5998.1458.PMID20847244
^Some demographers challenge that number, putting the figure at perhaps half that level.
^ 29.029.1 Olesen, Alexa (27 October 2011). "Experts challenge China's 1-child population claim". Boston.com. Archived from the original on 5 January 2012. Retrieved 10 July 2012.
^ Moore, Malcolm (15 March 2013). "336 million abortions under China's one-child policy". Telegraph.co.uk. Archived from the original on 24 January 2018. Retrieved 5 April 2018.
^ "PRC Family Planning: The Market Weakens Controls But Encourages Voluntary Limits". U.S. Embassy in Beijing. June 1988. Archived from the original on 18 February 2013.
^ PRC journal Social Sciences in China [Zhongguo, January 1988]