@inbook{NBERc4219,
 Crossref = "NBERminc73-1",
 title = "Supplement to NBER Report Eleven: Youth, Education, and Work",
 author = "Jacob A. Mincer",
 BookTitle = "Supplement to NBER Report Eleven: Youth, Education, and Work",
 Publisher = "NBER",
 year = "1972",
 URL = "http://www.nber.org/chapters/c4219",
}
@book{NBERminc73-1,
 title = "Supplement to NBER Report Eleven: Youth, Education, and Work",
 author = "Jacob A. Mincer",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "NBER",
 year = "1973",
 URL = "http://www.nber.org/books/minc73-1",
}