APA

Pius, . (1960). Guide for living: an apporoved selection of letters and addresses of His Holiness Pope Pius xii. New York: Longmans, Green.

Chicago

Pius, . 1960. Guide for living: an apporoved selection of letters and addresses of His Holiness Pope Pius xii. New York: Longmans, Green.

Harvard

Pius, . (1960). Guide for living: an apporoved selection of letters and addresses of His Holiness Pope Pius xii. New York: Longmans, Green.

MLA

Pius, . Guide for living: an apporoved selection of letters and addresses of His Holiness Pope Pius xii. New York: Longmans, Green. 1960.