Barro, R. J., & Sala-i-Martin, X. (2003). Economic growth (2nd ed.). MIT Press.
Cita Chicago (17th ed.)Barro, Robert J., i Xavier Sala-i-Martin. Economic Growth. 2nd ed. Cambridge, Mass.: MIT Press, 2003.
Cita MLA (9th ed.)Barro, Robert J., i Xavier Sala-i-Martin. Economic Growth. 2nd ed. MIT Press, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.