Hullen, G. (2003). Living Arrangements and Households - Methods and Results of Demographic Projections.
Chicago-referens (17:e uppl.)Hullen, Gert. Living Arrangements and Households - Methods and Results of Demographic Projections. Wiesbaden, 2003.
MLA-referens (8:e uppl.)Hullen, Gert. Living Arrangements and Households - Methods and Results of Demographic Projections. 2003.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.