Não informado. (1969). Yearbook of international congress proceedings. Union of International Associations.
Čikaški stil citiranja (17. izdanje)Não informado. Yearbook of International Congress Proceedings. Brussels: Union of International Associations, 1969.
MLA način citiranja (8. izdanje)Não informado. Yearbook of International Congress Proceedings. Union of International Associations, 1969.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.