Cita APA (7th ed.)

Wilkinson, J., & King, J. (2001). Portugal (3rd ed.). Lonely Planet.

Cita Chicago (17th ed.)

Wilkinson, Julia, i John King. Portugal. 3rd ed. Hawthorn, Vic., Australia: Lonely Planet, 2001.

Cita MLA (9th ed.)

Wilkinson, Julia, i John King. Portugal. 3rd ed. Lonely Planet, 2001.