Cita APA (7th ed.)
Nehls, G. (1987). Christians ask muslims. Evangelical Mission Press.
Cita Chicago (17th ed.)
Nehls, Gerhard. Christians Ask Muslims. Bellville: Evangelical Mission Press, 1987.
Cita MLA (9th ed.)
Nehls, Gerhard. Christians Ask Muslims. Evangelical Mission Press, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.