Hullen, G. (2003). Living Arrangements and Households - Methods and Results of Demographic Projections.
Chicago-Zitierstil (17. Ausg.)Hullen, Gert. Living Arrangements and Households - Methods and Results of Demographic Projections. Wiesbaden, 2003.
MLA-Zitierstil (8. Ausg.)Hullen, Gert. Living Arrangements and Households - Methods and Results of Demographic Projections. 2003.
警告：这些引文格式不一定是100％准确.