Cita APA (7a ed.)

Bailén, J. M., & Gil, J. (1997). Transitional efects of a pension system change in Spain. [s.n].

Cita Chicago Style (17a ed.)

Bailén, José M., y Joan Gil. Transitional Efects of a Pension System Change in Spain. UniverSitat de Barcelona, Barcelona: [s.n], 1997.

Cita MLA (9a ed.)

Bailén, José M., y Joan Gil. Transitional Efects of a Pension System Change in Spain. [s.n], 1997.