APA

Grenville J. A. S., . (1980). A world history of the twentieth century. Glasgow: Fontana Paperbacks.

Chicago

Grenville John Ashley Soamen, . 1980. A world history of the twentieth century. Glasgow: Fontana Paperbacks.

Harvard

Grenville J. A. S., . (1980). A world history of the twentieth century. Glasgow: Fontana Paperbacks.

MLA

Grenville John Ashley Soamen, . A world history of the twentieth century. Glasgow: Fontana Paperbacks. 1980.