1 2 Central Statistical Organisation of Yemen.Statistic Yearbook 2013 of Yemen Lưu trữ 2015-09-12 tại Wayback Machine. The fields in the population.xls file are decimals (though they appear as whole numbers). To get the figures in the table, they were multiplied by 1000. Accessed ngày 13 tháng 1 năm 2016.
