APA

(1957). International Catholic Migration Congress: organized by the International Catholic migration commission, Geneva, and the Central Catholic emigration foundation. The Hague. "Castle Bouvigne", Breda. Netherlands: .

Chicago

1957. International Catholic Migration Congress: organized by the International Catholic migration commission, Geneva, and the Central Catholic emigration foundation. The Hague. "Castle Bouvigne", Breda. Netherlands: .

Harvard

(1957). International Catholic Migration Congress: organized by the International Catholic migration commission, Geneva, and the Central Catholic emigration foundation. The Hague. "Castle Bouvigne", Breda. Netherlands: .

MLA

International Catholic Migration Congress: organized by the International Catholic migration commission, Geneva, and the Central Catholic emigration foundation. The Hague. "Castle Bouvigne", Breda. Netherlands: . 1957.