Crabb, L. J. (1975). Basic principles of biblical counseling. Zondervan.
Lua i Stíl Chicago (17ú heag.)Crabb, Lawrence J. Basic Principles of Biblical Counseling. Grand Rapids, MI: Zondervan, 1975.
Lua MLA (9ú heag.)Crabb, Lawrence J. Basic Principles of Biblical Counseling. Zondervan, 1975.
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