Whitney, D. S. (1991). Spiritual disciplines for the Christian life. Navpress.
Chicago-čujuhus (17. p.)Whitney, Donald S. Spiritual Disciplines for the Christian Life. Colorado: Navpress, 1991.
MLA-čujuhus (9. p.)Whitney, Donald S. Spiritual Disciplines for the Christian Life. Navpress, 1991.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.