APA

De Burgh W. G., . (1955). The legacy of the ancient world. London: Penguin Books.

Chicago

De Burgh William George, . 1955. The legacy of the ancient world. London: Penguin Books.

Harvard

De Burgh W. G., . (1955). The legacy of the ancient world. London: Penguin Books.

MLA

De Burgh William George, . The legacy of the ancient world. London: Penguin Books. 1955.