Riggs,Charlie. (1986). Learning to walk with God: Twelve steps to Christian growth. world wide publications.
Chicago-viite (17. p.)Riggs,Charlie. Learning to Walk with God: Twelve Steps to Christian Growth. Minneapolis: world wide publications, 1986.
MLA-viite (9. p.)Riggs,Charlie. Learning to Walk with God: Twelve Steps to Christian Growth. world wide publications, 1986.
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