Bonnell, J. S. (1948). Spiritual counseling. Harper and Brothers.
Lua i Stíl Chicago (17ú heag.)Bonnell, John Sutherland. Spiritual Counseling. Harper and Brothers, 1948.
Lua MLA (9ú heag.)Bonnell, John Sutherland. Spiritual Counseling. Harper and Brothers, 1948.
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