APA

Drucker P. F., . (1989). The new realities: in government and politics, in economics and business, in society and world view. New York: Harper & Row.

Chicago

Drucker Peter Ferdinand, . 1989. The new realities: in government and politics, in economics and business, in society and world view. New York: Harper & Row.

Harvard

Drucker P. F., . (1989). The new realities: in government and politics, in economics and business, in society and world view. New York: Harper & Row.

MLA

Drucker Peter Ferdinand, . The new realities: in government and politics, in economics and business, in society and world view. New York: Harper & Row. 1989.