APA aipamena

(1969). Yearbook of International Organizations. Belgium: Union of International Associations.

Chicago Style aipamena

Yearbook of International Organizations. Belgium: Union of International Associations, 1969.

MLA aipamena

Yearbook of International Organizations. Belgium: Union of International Associations, 1969.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.