APA

Gathorne-Hardy G. M., . (1950). A short history of international affairs, 1920-1939. London: Oxford University Press.

Chicago

Gathorne-Hardy G M, . 1950. A short history of international affairs, 1920-1939. London: Oxford University Press.

Harvard

Gathorne-Hardy G. M., . (1950). A short history of international affairs, 1920-1939. London: Oxford University Press.

MLA

Gathorne-Hardy G M, . A short history of international affairs, 1920-1939. London: Oxford University Press. 1950.