Cita APA (7a ed.)

Union of International Associations. Yearbook of International Organizations 1981 (19.). Union of International Associations.

Cita Chicago Style (17a ed.)

Union of International Associations. Yearbook of International Organizations 1981. 19. Bruselas: Union of International Associations.

Cita MLA (9a ed.)

Union of International Associations. Yearbook of International Organizations 1981. 19. Union of International Associations.