Duewel, W. L. (1990). Mighty prevailing prayer. Francis Asbury.
Cita Chicago (17th ed.)Duewel, Wesley L. Mighty Prevailing Prayer. Grand Rapids: Francis Asbury, 1990.
Cita MLA (9th ed.)Duewel, Wesley L. Mighty Prevailing Prayer. Francis Asbury, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.