APA

Atkinsons W., . (1960). A history of Spain and Portugal. London: Penguin Books.

Chicago

Atkinsons Williams, . 1960. A history of Spain and Portugal. London: Penguin Books.

Harvard

Atkinsons W., . (1960). A history of Spain and Portugal. London: Penguin Books.

MLA

Atkinsons Williams, . A history of Spain and Portugal. London: Penguin Books. 1960.