(1997). Survey of Income and Program Participation (SIPP) 1991 Full Panel Microdata File United States Department of Commerce. Bureau of the Census. [electronic resource].
Chicago-Zitierstil (17. Ausg.)Survey of Income and Program Participation (SIPP) 1991 Full Panel Microdata File United States Department of Commerce. Bureau of the Census. [electronic Resource]. 1997.
MLA-Zitierstil (9. Ausg.)Survey of Income and Program Participation (SIPP) 1991 Full Panel Microdata File United States Department of Commerce. Bureau of the Census. [electronic Resource]. 1997.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.