Cita APA (7th ed.)
Harpur, T. (1977). The road to Bethlehem: Two thousand... David Cook.
Cita Chicago (17th ed.)
Harpur, Tom. The Road to Bethlehem: Two Thousand... Illinois: David Cook, 1977.
Cita MLA (9th ed.)
Harpur, Tom. The Road to Bethlehem: Two Thousand... David Cook, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.