@inbook{NBERc2589,
 Crossref = "NBERwick39-1",
 title = "Differentials in Housing Costs",
 author = "David L. Wickens",
 BookTitle = "Differentials in Housing Costs",
 Publisher = "NBER",
 pages = "1-16",
 year = "1939",
 URL = "http://www.nber.org/chapters/c2589",
}
@book{NBERwick39-1,
 title = "Differentials in Housing Costs",
 author = "David L. Wickens",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "NBER",
 year = "1939",
 URL = "http://www.nber.org/books/wick39-1",
}