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.
警告:这些引文格式不一定是100%准确.