APA

Coppock J. O., . (1963). North Atlantic policy: the agricultural gap. New York: Twentieth Century Fund.

Chicago

Coppock John O, . 1963. North Atlantic policy: the agricultural gap. New York: Twentieth Century Fund.

Harvard

Coppock J. O., . (1963). North Atlantic policy: the agricultural gap. New York: Twentieth Century Fund.

MLA

Coppock John O, . North Atlantic policy: the agricultural gap. New York: Twentieth Century Fund. 1963.