Gaya APA

Gibbons, William J.. (1963). Seven Great Encyclicals . New York: Paulist Press.

Gaya Chicago

Gibbons, William J.. Seven Great Encyclicals. New York: Paulist Press, 1963. Text.

Gaya MLA

Gibbons, William J.. Seven Great Encyclicals. New York: Paulist Press, 1963. Text.

Gaya Turabian

Gibbons, William J.. Seven Great Encyclicals. New York: Paulist Press, 1963. Print.