Não informado. (1956). Migration News. International Catholic Migration Commission.
Chicago-referens (17:e uppl.)Não informado. Migration News. Geneva, Suíça: International Catholic Migration Commission, 1956.
MLA-referens (8:e uppl.)Não informado. Migration News. International Catholic Migration Commission, 1956.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.