Citazione Stile APA (7a Edizione)
Union of International Associations. Yearbook of International Organizations 1981 (19.). Union of International Associations.
Citazione stile Chigago Style (17a edizione)
Union of International Associations. Yearbook of International Organizations 1981. 19. Bruselas: Union of International Associations.
Citatione MLA (9a ed.)
Union of International Associations. Yearbook of International Organizations 1981. 19. Union of International Associations.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.