@inbook{NBERc10714,
 Crossref = "NBERharr06-1",
 title = "Globalization and the Returns to Speaking English in South Africa",
 author = "James Levinsohn",
 BookTitle = "Globalization and Poverty",
 Publisher = "University of Chicago Press",
 pages = "629-646",
 year = "2007",
 month = "March",
 URL = "http://www.nber.org/chapters/c10714",
}
@book{NBERharr06-1,
 title = "Globalization and Poverty",
 author = "Ann Harrison",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "University of Chicago Press",
 year = "2007",
 URL = "http://www.nber.org/books/harr06-1",
}