Cita APA (7a ed.)

Unesco. (1972). PRESERVING and restoring munuments and historic buildings. Unesco.

Cita Chicago Style (17a ed.)

Unesco. PRESERVING and Restoring Munuments and Historic Buildings. París: Unesco, 1972.

Cita MLA (8a ed.)

Unesco. PRESERVING and Restoring Munuments and Historic Buildings. Unesco, 1972.