APA (7th ed.) Citation

Wilkinson, J., & King, J. (1999). Portugal (2nd ed.). Lonely Planet Pub.

Chicago Style (17th ed.) Citation

Wilkinson, Julia, and John King. Portugal. 2nd ed. Hawthorn, Vic., Australia: Lonely Planet Pub, 1999.

MLA (9th ed.) Citation

Wilkinson, Julia, and John King. Portugal. 2nd ed. Lonely Planet Pub, 1999.