Clemmons, W. P., & Hester, H. (1974). Growth through groups. Broadman Press.
Chicago-čujuhus (17. p.)Clemmons, William P., juo Harvey Hester. Growth Through Groups. Nashville: Broadman Press, 1974.
MLA-čujuhus (9. p.)Clemmons, William P., juo Harvey Hester. Growth Through Groups. Broadman Press, 1974.
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