@inbook{NBERc6220,
 Crossref = "NBERfeld88-1",
 title = "Front matter, table of contents, preface",
 author = "Martin Feldstein",
 BookTitle = "The United States in the World Economy",
 Publisher = "University of Chicago Press",
 year = "1988",
 URL = "http://www.nber.org/chapters/c6220",
}
@book{NBERfeld88-1,
 title = "The United States in the World Economy",
 author = "Martin Feldstein",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "University of Chicago Press",
 year = "1988",
 URL = "http://www.nber.org/books/feld88-1",
}