Coombs, P. H. (1964). The fourth dimension of foreign policy: Educational and cultural affairs. Harper and Row.
Cita Chicago (17th ed.)Coombs, Philip H. The Fourth Dimension of Foreign Policy: Educational and Cultural Affairs. Nueva York: Harper and Row, 1964.
Cita MLA (9th ed.)Coombs, Philip H. The Fourth Dimension of Foreign Policy: Educational and Cultural Affairs. Harper and Row, 1964.
Atenció: Aquestes cites poden no estar 100% correctes.