Cita APA (7th ed.)

Duke, M. (1957). Beyond the Pillars of Hercules: A Spanish journey. Evans.

Cita Chicago (17th ed.)

Duke, Madelaine. Beyond the Pillars of Hercules: A Spanish Journey. Lond.: Evans, 1957.

Cita MLA (8th ed.)

Duke, Madelaine. Beyond the Pillars of Hercules: A Spanish Journey. Evans, 1957.