Citazione APA

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

Stile di citazione Chicago

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

Citazione MLA

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

Attenzione: Queste citazioni potrebbero non essere precise al 100%.