@inbook{NBERc5285,
 Crossref = "NBERfrie70-1",
 title = "Sources and Accuracy of Basic Data",
 author = "Milton Friedman and Anna Jacobson Schwartz",
 BookTitle = "Monetary Statistics of the United States: Estimates, Sources, Methods",
 Publisher = "NBER",
 pages = "205-213",
 year = "1970",
 URL = "http://www.nber.org/chapters/c5285",
}
@book{NBERfrie70-1,
 title = "Monetary Statistics of the United States: Estimates, Sources, Methods",
 author = "Milton Friedman and Anna Jacobson Schwartz",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "NBER",
 year = "1970",
 URL = "http://www.nber.org/books/frie70-1",
}