(1989). Survey of Income and Program Participation (SIPP) 1985 Panel United States Department of Commerce. Bureau of the Census. [electronic resource].
Chicago-Zitierstil (17. Ausg.)Survey of Income and Program Participation (SIPP) 1985 Panel United States Department of Commerce. Bureau of the Census. [electronic Resource]. 1989.
MLA-Zitierstil (9. Ausg.)Survey of Income and Program Participation (SIPP) 1985 Panel United States Department of Commerce. Bureau of the Census. [electronic Resource]. 1989.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.