International Federation for Housing and Planning International Congress (1973 : Copenhagen). (1973). Copenhagen 1973: International Congress IFHP, 9-14 September. IFHP.
Cita Chicago (17th ed.)International Federation for Housing and Planning International Congress (1973 : Copenhagen). Copenhagen 1973: International Congress IFHP, 9-14 September. [s.l.]: IFHP, 1973.
Cita MLA (9th ed.)International Federation for Housing and Planning International Congress (1973 : Copenhagen). Copenhagen 1973: International Congress IFHP, 9-14 September. IFHP, 1973.
Atenció: Aquestes cites poden no estar 100% correctes.