Coimbra, R., & Plaister, E. (2001). Portugal (English edition.). Casa Editrice Bonechi.
Cita Chicago (17th ed.)Coimbra, Rui, i Elizabeth Plaister. Portugal. English edition. Florence, Italy: Casa Editrice Bonechi, 2001.
Cita MLA (9th ed.)Coimbra, Rui, i Elizabeth Plaister. Portugal. English edition. Casa Editrice Bonechi, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.