@inbook{NBERc1125, Crossref = "NBEReast68-1", title = "Appendix for Chapter 4", author = "Richard A. Easterlin", BookTitle = "Population, Labor Force, and Long Swings in Economic Growth: The American Experience", Publisher = "NBER", pages = "225-233", year = "1968", URL = "http://www.nber.org/chapters/c1125", } @book{NBEReast68-1, title = "Population, Labor Force, and Long Swings in Economic Growth: The American Experience", author = "Richard A. Easterlin", institution = "National Bureau of Economic Research", type = "Book", publisher = "NBER", year = "1968", URL = "http://www.nber.org/books/east68-1", }