Cita APA (7a ed.)

Barr, R. (1966). Main currents in early Christian thought. Paulist Press.

Cita Chicago Style (17a ed.)

Barr, Robert. Main Currents in Early Christian Thought. Glen Rock, NJ: Paulist Press, 1966.

Cita MLA (9a ed.)

Barr, Robert. Main Currents in Early Christian Thought. Paulist Press, 1966.