Παραπομπή APA

Vickers, S. . G. (1965). The art of judgment: A study of policy making. University papaerbacks.

Παραπομπή Chicago Style

Vickers, Sir Geoffrey. The Art of Judgment: A Study of Policy Making. London: University papaerbacks, 1965.

Παραπομπή MLA

Vickers, Sir Geoffrey. The Art of Judgment: A Study of Policy Making. University papaerbacks, 1965.