APA

Kennan George F,, . (1978). The cloud of danger : Some current problems of American foreign policy. London: Hutchinson.

Chicago

Kennan George F,, . 1978. The cloud of danger : Some current problems of American foreign policy. London: Hutchinson.

Harvard

Kennan George F,, . (1978). The cloud of danger : Some current problems of American foreign policy. London: Hutchinson.

MLA

Kennan George F,, . The cloud of danger : Some current problems of American foreign policy. London: Hutchinson. 1978.