APA

Eichelberger C. M., . (1965). UN: the first twenty years. New York: Harper & Row.

Chicago

Eichelberger Clark Mell, . 1965. UN: the first twenty years. New York: Harper & Row.

Harvard

Eichelberger C. M., . (1965). UN: the first twenty years. New York: Harper & Row.

MLA

Eichelberger Clark Mell, . UN: the first twenty years. New York: Harper & Row. 1965.