APA (7th ed.) Citation

Unwin, P. T. H. (1987). Portugal. Clio.

Chicago Style (17th ed.) Citation

Unwin, P. T. H. Portugal. Oxford ; Santa Barbara, Calif.: Clio, 1987.

MLA (9th ed.) Citation

Unwin, P. T. H. Portugal. Clio, 1987.

Warning: These citations may not always be 100% accurate.