@inbook{NBERc12666,
 Crossref = "NBERcarr11-1",
 title = "Asking Households about Expenditures: What Have We Learned?",
 author = "Thomas F. Crossley and Joachim K. Winter",
 BookTitle = "Improving the Measurement of Consumer Expenditures",
 Publisher = "University of Chicago Press",
 year = "2012",
 month = "August",
 URL = "http://www.nber.org/chapters/c12666",
}
@book{NBERcarr11-1,
 title = "Improving the Measurement of Consumer Expenditures",
 author = "Christopher Carroll and Thomas Crossley and John Sabelhaus",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "University of Chicago Press",
 year = "2013",
 URL = "http://www.nber.org/books/carr11-1",
}