Schuck, M. J. (1991). That they be one: The social teaching of the papal encyclicals, 1740 - 1989. Georgetown Univ. Pr.
Chicago Style (17th ed.) CitationSchuck, Michael Joseph. That They Be One: The Social Teaching of the Papal Encyclicals, 1740 - 1989. Washington, D. C: Georgetown Univ. Pr, 1991.
MLA (9th ed.) CitationSchuck, Michael Joseph. That They Be One: The Social Teaching of the Papal Encyclicals, 1740 - 1989. Georgetown Univ. Pr, 1991.
Warning: These citations may not always be 100% accurate.