{{Cite journal| doi = 10.1016/S0140-6736(15)61439-8| issn = 01406736| volume = 386| issue = 9992| pages = 427| last1 = Bongaarts| first1 = John| last2 = Guilmoto| first2 = Christophe Z.| title = How many more missing women?| journal = The Lancet| access-date = 2015-09-25| date = 2015-08| url = http://linkinghub.elsevier.com/retrieve/pii/S0140673615614398}}