Lua APA (7ú heag.)
ebrary, Inc, & Becker, P. C. (2002). A Statistical portrait of the United States: Social conditions and trends (2nd ed.). Bernan Press.
Lua i Stíl Chicago (17ú heag.)
ebrary, Inc, agus Patricia C. Becker. A Statistical Portrait of the United States: Social Conditions and Trends. 2nd ed. Lanham, Md.: Bernan Press, 2002.
Lua MLA (9ú heag.)
ebrary, Inc, agus Patricia C. Becker. A Statistical Portrait of the United States: Social Conditions and Trends. 2nd ed. Bernan Press, 2002.
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