Cita APA (7th ed.)
Phillips, T., Norsworthy, B., & Whalin, T. (1997). The world at your door. Bethany House.
Cita Chicago (17th ed.)
Phillips, Tom, Bob Norsworthy, i Terry Whalin. The World at Your Door. Minneapolis, Minn.: Bethany House, 1997.
Cita MLA (9th ed.)
Phillips, Tom, et al. The World at Your Door. Bethany House, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.