The Church of Jesus Christ of Latter-day Saints provides an online search of the millions of names in its International Genealogical Index, and of genealogical Web sites. Also information on its Family History Library and local branches.
Many vital records are available, often with document image at http://pilot.familysearch.org/recordsearch/start.html#start
This is not a source and this page should not be cited if at all possible. FamilySearch is a repository, formerly containing the Source:Ancestral File and the Source:International Genealogical Index. In 2010/2011, the website and its sources were reconfigured and it is now called FamilySearch Record Search.
Rather than citing this page, please cite the individual databases - IGI, AF, or one of the collections of vital records (each of which should have its own source page.