Cita APA (7a ed.)

(1972). Bibliographical services throught the World 1965-69. Unesco.

Cita Chicago Style (17a ed.)

Bibliographical Services Throught the World 1965-69. Paris: Unesco, 1972.

Cita MLA (9a ed.)

Bibliographical Services Throught the World 1965-69. Unesco, 1972.