Cita APA (7a ed.)

Royo, S., & Manuel, P. C. (2003). Spain and Portugal in the European Union: The first fifteen years. Frank Cass.

Cita Chicago Style (17a ed.)

Royo, Sebastián, y Paul Christopher Manuel. Spain and Portugal in the European Union: The First Fifteen Years. London [etc.]: Frank Cass, 2003.

Cita MLA (9a ed.)

Royo, Sebastián, y Paul Christopher Manuel. Spain and Portugal in the European Union: The First Fifteen Years. Frank Cass, 2003.