Cita APA (7th ed.)

Barro, R. J., & Sala-i-Martín, X. (1999). Economic growth. MIT.

Cita Chicago (17th ed.)

Barro, Robert J., i Xavier Sala-i-Martín. Economic Growth. Cambridge: MIT, 1999.

Cita MLA (9th ed.)

Barro, Robert J., i Xavier Sala-i-Martín. Economic Growth. MIT, 1999.