(1990). Survey of Income and Program Participation (SIPP) 1985 Full Panel Research File United States Department of Commerce. Bureau of the Census. [electronic resource].
Chicago (17e ed.) BronvermeldingSurvey of Income and Program Participation (SIPP) 1985 Full Panel Research File United States Department of Commerce. Bureau of the Census. [electronic Resource]. 1990.
MLA (9e ed.) BronvermeldingSurvey of Income and Program Participation (SIPP) 1985 Full Panel Research File United States Department of Commerce. Bureau of the Census. [electronic Resource]. 1990.
Let op: Deze citaties zijn niet altijd 100% accuraat.