Cita APA (7th ed.)

Ribeiro, A. P., & Pacheco, C. (2006). The State of the world. Carcanet Press.

Cita Chicago (17th ed.)

Ribeiro, António Pinto, i Carlos Pacheco. The State of the World. Manchester: Carcanet Press, 2006.

Cita MLA (8th ed.)

Ribeiro, António Pinto, i Carlos Pacheco. The State of the World. Carcanet Press, 2006.