Gaya APA

Baum, G. (1989). The Logic of Solidarity: commentaries on pope john Paul II's encyclical on social concern . Maryknoll, New York.: Orbis Books.

Gaya MLA

Baum, Gregory.. "The Logic of Solidarity: commentaries on pope john Paul II's encyclical on social concern". Maryknoll, New York.: Orbis Books, 1989. Text.