{{Cite journal| doi = 10.1371/journal.pone.0253721| issn = 1932-6203| volume = 16| issue = 7| pages = –0253721| last1 = Chao| first1 = Fengqing| last2 = Guilmoto| first2 = Christophe Z.| last3 = Ombao| first3 = Hernando| others = Srinivas Goli (ed.)| title = Sex ratio at birth in Vietnam among six subnational regions during 1980–2050, estimation and probabilistic projection using a Bayesian hierarchical time series model with 2.9 million birth records| journal = PLOS ONE| access-date = 2021-09-28| date = 2021-07-14| url = https://dx.plos.org/10.1371/journal.pone.0253721}}