(1998). Survey of Income and Program Participation (SIPP) 1993 Panel, Longitudinal File United States Department of Commerce. Bureau of the Census. [electronic resource].
Цитирование в стиле Чикаго (17-е изд.)Survey of Income and Program Participation (SIPP) 1993 Panel, Longitudinal File United States Department of Commerce. Bureau of the Census. [electronic Resource]. 1998.
Цитирование MLA (9-е изд.)Survey of Income and Program Participation (SIPP) 1993 Panel, Longitudinal File United States Department of Commerce. Bureau of the Census. [electronic Resource]. 1998.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.