Bright, W. R. (1965). Teacher's manual for the basic steps toward christian maturity. Campus crusade for christ international.
Chicago-viite (17. p.)Bright, William R. Teacher's Manual for the Basic Steps Toward Christian Maturity. Arrowhead spring: Campus crusade for christ international, 1965.
MLA-viite (9. p.)Bright, William R. Teacher's Manual for the Basic Steps Toward Christian Maturity. Campus crusade for christ international, 1965.
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