{{Cite conference| publisher = communication orale| conference = XXIXe Congrès international de la population de l'UIESP 2021 (IPC 2021), Conférence virtuelle| last1 = Becquet| first1 = Valentine| last2 = Guilmoto| first2 = Christophe Z.| title = Is son preference increasing or decreasing in Viet Nam? Lessons from the 2009 and 2019 censuses| location = virtuel| date = 2021-12}}