@inbook{NBERc11283,
 Crossref = "NBERclot96-1",
 title = "Classes and Course Offerings",
 author = "Charles T. Clotfelter",
 BookTitle = "Buying the Best: Cost Escalation in Elite Higher Education",
 Publisher = "Princeton University Press",
 pages = "218-246",
 year = "1996",
 month = "January",
 URL = "http://www.nber.org/chapters/c11283",
}
@book{NBERclot96-1,
 title = "Buying the Best: Cost Escalation in Elite Higher Education",
 author = "Charles T. Clotfelter",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "Princeton University Press",
 year = "1996",
 URL = "http://www.nber.org/books/clot96-1",
}