Another source for 2010 Census data is the Census Bureau’s TIGER/Line Shapefiles page. The site includes various Census geographies (e.g., blocks, block groups, tracts) as well as documentation.
See also: http://www.census.gov/geo/www/tiger/shp.html
http://www.census.gov/geo/www/tiger/ for more options
Today, ESRI released additional 2010 Census data to the public. Downloading and formatting Census data can be very time-consuming, so this resource is a real boon to users of Census data.
Additional resources and articles from ESRI can be found on their news page.
A common question that arises when writing a paper, thesis, or dissertation, is “How do I cite maps or spatial data”? I have cobbled together some examples over the years, found at various locations on the web, into a web page. Some of the source sites are no longer available (except perhaps at the Internet Wayback Machine), but the sources are still listed on the web page below.
A number of examples were drawn from: Cartographic Citations: A Style Guide, MAGERT Circular No. 1. Chicago: American Library Association, 1992. Thanks to the original authors of this publication.
See this page for my list of geospatial citation examples. I will update these examples as time permits.