United Nations Educational, Sceintific and Cultural Organization. (1972). In the minds of men: Unesco 1946 to 1971. s.n.
Cita Chicago (17th ed.)United Nations Educational, Sceintific and Cultural Organization. In the Minds of Men: Unesco 1946 to 1971. Paris: s.n, 1972.
Cita MLA (9th ed.)United Nations Educational, Sceintific and Cultural Organization. In the Minds of Men: Unesco 1946 to 1971. s.n, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.