Não informado. (2018). Population Reports. George Washington University, Department of Medical and Public Affairs.
Chicago-Zitierstil (17. Ausg.)Não informado. Population Reports. Washington: George Washington University, Department of Medical and Public Affairs, 2018.
MLA-Zitierstil (8. Ausg.)Não informado. Population Reports. George Washington University, Department of Medical and Public Affairs, 2018.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.