Cita APA (7th ed.)

Hamburg. UNESCO Institute for education & Serden, H. (1962). Education for international understanding under conditions of tension. s.n.

Cita Chicago (17th ed.)

Hamburg. UNESCO Institute for education i Hugo Serden. Education for International Understanding Under Conditions of Tension. Hamburg: s.n, 1962.

Cita MLA (9th ed.)

Hamburg. UNESCO Institute for education i Hugo Serden. Education for International Understanding Under Conditions of Tension. s.n, 1962.