Cita APA (7a ed.)

(1978). Handbook on the international exchange of publications (4th ed.). Unesco.

Cita Chicago Style (17a ed.)

Handbook on the International Exchange of Publications. 4th ed. Paris: Unesco, 1978.

Cita MLA (9a ed.)

Handbook on the International Exchange of Publications. 4th ed. Unesco, 1978.