Não informado. Population Reports. George Washington University, Department of Medical and Public Affairs.
Citação do estilo Chicago (17ª ed.)Não informado. Population Reports. Washington: George Washington University, Department of Medical and Public Affairs.
Citação MLA (8ª ed.)Não informado. Population Reports. George Washington University, Department of Medical and Public Affairs.
Atenció: Aquestes cites poden no estar 100% correctes.