Cita APA (7th ed.)

Unesco. (1975). The conservation of cities. Croom Helm, Unesco.

Cita Chicago (17th ed.)

Unesco. The Conservation of Cities. London, Paris: Croom Helm, Unesco, 1975.

Cita MLA (9th ed.)

Unesco. The Conservation of Cities. Croom Helm, Unesco, 1975.