Cita APA (7a ed.)

Bengoechea, P., & Pérez Quirós, G. (2004). A useful toll to identify recessions in the Euro-area. Banco de España.

Cita Chicago Style (17a ed.)

Bengoechea, Pilar, y Gabriel Pérez Quirós. A Useful Toll to Identify Recessions in the Euro-area. Madrid: Banco de España, 2004.

Cita MLA (9a ed.)

Bengoechea, Pilar, y Gabriel Pérez Quirós. A Useful Toll to Identify Recessions in the Euro-area. Banco de España, 2004.