Cita APA (7a ed.)

Hellwig, M. (2002). Understanding Catholicism (2nd ed.). Paulist Press.

Cita Chicago Style (17a ed.)

Hellwig, Monika. Understanding Catholicism. 2nd ed. New York [etc.]: Paulist Press, 2002.

Cita MLA (9a ed.)

Hellwig, Monika. Understanding Catholicism. 2nd ed. Paulist Press, 2002.