Lee, R. E. (1957). The library-sponsored discussion group. Library-Community Project, American Library Association.
Chicago-viite (17. p.)Lee, Robert Ellis. The Library-sponsored Discussion Group. [Chicago]: Library-Community Project, American Library Association, 1957.
MLA-viite (9. p.)Lee, Robert Ellis. The Library-sponsored Discussion Group. Library-Community Project, American Library Association, 1957.
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