Cairo Demographic Centre. (2003). Population of Egypt in the 20th century. Cairo Demographic Center.
芝加哥风格引文Cairo Demographic Centre. Population of Egypt in the 20th Century. Cairo: Cairo Demographic Center, 2003.
MLA引文Cairo Demographic Centre. Population of Egypt in the 20th Century. Cairo Demographic Center, 2003.
警告：这些引文格式不一定是100％准确.